网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
During volcanic _____, dark clouds of smoke fill the sky, bringing fears to local residents.
A
eruption
B
ejection
C
erosion
D
erection
参考答案
参考解析
解析：
句意：在火山爆发期间，天空中弥漫着黑色的烟雾，给当地居民带来了恐惧。eruption爆发，喷发。ejection弹出，射出。erosion腐蚀，侵蚀。erection建造；竖立。
句意：在火山爆发期间，天空中弥漫着黑色的烟雾，给当地居民带来了恐惧。eruption爆发，喷发。ejection弹出，射出。erosion腐蚀，侵蚀。erection建造；竖立。
更多 “单选题During volcanic _____, dark clouds of smoke fill the sky, bringing fears to local residents.A eruptionB ejectionC erosionD erection” 相关考题
考题
During the dark early days of the War, economist William Beveridge put forward proposals for postwar “()” social security.
A.life-longB.cradle-to-graveC.familyD.complete
考题
You can ( ) to a beautiful blue sky and then it starts raining during breakfast.
A.wake toB.wake upC.wake forD.wake towards
考题
The first indications a mariner will have of the approach of a warm front will be ______.A.large cumulonimbus (thunderclouds) building upB.high cirrus clouds gradually changing to cirrostratus and then to altostratusC.fog caused by the warm air passing over the cooler waterD.low dark clouds accompanied by intermittent rain
考题
What is the first visible indication of the presence of a tropical cyclone or hurricane ________．A.Stratocumulus clouds or strange birdsB.Rain and increasing windsC.An exceptionally long swellD.Dark clouds and the“bar”of the storm
考题
Altocumulus clouds are defined as______．A.high cloudsB.middle cloudsC.low cloudsD.vertical development clouds
考题
High clouds, composed of small white flakes or scaly globular masses, and often banded together to form a mackerel sky, would be classified as ______.A.cirrusB.cirrocumulusC.altostratusD.Cumulonimbus
考题
共用题干
Dark Forces Dominate UniverseThe earth,moon,sun and all visible stars in the sky make up less than one percent of the universe.Almost all the rest is dark matter and dark energy,unknown forces that _______(1)astronomers.Observations in recent years have changed the basic_______(2)of how the universe evolved and have indicated how little is known about the major forces and substances that_______(3)our world.Astronomers now know that luminous（发光的）matter一stars , planets and hot gas一 accounts_______(4)only about 0.4 percent of the universe.Non-luminous components , such as black holes and intergalactic（星系间的）gas,_______(5) up 3.6 percent.The rest is either dark matter,about 23 percent,or dark energy,about 73 percent.Dark matter,sometimes_______(6)"cold dark matter,"has been known for some time.Only recently have researchers come to understand the key role it_______ (7)in the formation of stars,planets and even people."We_______(8)our very existence to dark matter,"said physicist PaulSteinhardt and a co-author of a review on dark matter which_______(9)not long ago in the journal Science."Dark matter dominated the structure_______(10)in the early universe," Steinhardt said."For the first few billion years dark matter contained most of the mass of the universe. You can think of ordinary matter_______(11)a froth（泡沫）of an ocean of dark matter. The dark matter clumps（结成块）and the ordinary matter falls into it. That_______(12) to the formation of the stars and galaxies（星系）."Without dark matter,"there would be virtually no structures in the universe,"The nature of dark matter is_______(13).It cannot be seen or detected directly. Astronomers know it is there because of its_______(14) on celestial（天体的）objects that can be seen and measured.But the most dominating force of all in the universe is called dark energy,a recently ________(15)power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed._________(11) A:with B:as C:from D:beside
考题
单选题Ice blink is（）.A
the dark appearance of the underside of a cloud layer due to reflection of a surface of open waterB
the soft light appearance on the underside of a cloud layer due to reflection from a surface of open waterC
the yellowish-white glare on the underside of a cloud layerD
water sky
考题
单选题It is difficult to determine which limb of the Moon is fully illuminated（）.A
when the Moon is low in the sky at rising or settingB
at the new Moon phaseC
when taking Moon sights during daylightD
when the terminator is nearly vertical
考题
单选题If the sky was clear，with the exception of a few cumulus clouds，it would indicate（）.A
rainB
hurricane weatherC
fair weatherD
fog setting in
考题
单选题Women who smoke during pregnancy produce _____.A
lighter babies than those who don'tB
heavier babies than those who don'tC
babies who can't live longD
babies who suffer from heart diseases
考题
单选题Altocumulus clouds are defined as（）.A
high cloudsB
middle cloudsC
low cloudsD
vertical development clouds
考题
单选题High clouds，composed of small white flakes or scaly globular masses，and often banded together to form a mackerel sky，would be classified as（）.A
cirrusB
cirrocumulusC
altostratusD
cumulonimbus
考题
单选题The first indications a mariner will have of the approach of a warm front will be （）.A
large cumulonimbus (thunderclouds) building upB
high cirrus clouds gradually changing to cirrostratus and then to altostratusC
fog caused by the warm air passing over the cooler waterD
low dark clouds accompanied by intermittent rain
考题
单选题What indicates that a tropical cyclone may be within 500 to 1，000 miles of your position?（）A
A pumping of the barometer up and down a few millibarsB
A sudden wind shift from southwest to northwest followed by steadily increasing windsC
The normal swell pattern becoming confused，with the length of the swell increasingD
An overcast sky with steadily increasing rain from nimbostratus clouds
考题
单选题—There are dark clouds, and the wind is blowing strongly.—It ______ that a typhoon is coming.A
feelsB
soundsC
seemsD
looks
考题
单选题In the Northern Hemisphere，what type of cloud formations would you expect to see to the west of an approaching tropical wave?（）.A
Cumulus clouds lined up in rows extending in a northeast to southwest directionB
High altostratus clouds in the morning hoursC
Cirrostratus clouds lined up in rows extending in a northeast to southwest directionD
Cirrostratus clouds lined up in rows extending in a north to south direction
考题
问答题Women who smoke during pregnancy produce babies on average about 5 to 8 ounces lighter than those who don't.
考题
单选题Clouds that form as small white flakes or scaly globular masses covering either small or large portions of the sky are（）.A
cirrusB
cirrostratusC
altostratusD
cirrocumulus
考题
单选题_____ he realized it was too late to return home.A
No sooner it grew dark whenB
It was not until dark thatC
Scarcely it grew dark thanD
While it grew dark that
考题
单选题During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke’s color will be（）.A
blackB
redC
orangeD
yellow
考题
单选题Snow has obliterated surface features and the sky is covered with uniform，altostratus clouds. There are no shadows and the horizon has disappeared. What is this condition called? （）A
Ice blinkB
WhiteoutC
Water skyD
Aurora reflection
热门标签
最新试卷