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Cows must eat grain, ________ they will not grow fat.
A、or
B、but
C、when
D、though
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A.ifB.unlessC.whenD.though
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What Is Cancer?Cancer is actually a group of many related diseases that all have to do with cells.Cells are the very small units that make up all________(1)things,including the human body.There are billions of cells________(2)each person's body.Cancer happens when cells that are not normal grow________(3)spread veryfast.Normal body cells grow and divide and know when to stop growing.Over time,they also die._______(4)these normal cells,cancer cells just continue to grow and divide out of control and don't die.Cancer cells usually group together to form tumors（肿瘤）.A growing tumor becomes a lump of cancer cells_________(5)can destroy the normal cells around the_________(6)and damage the body's healthy tissues.Thiscan make someone very _______(7).Sometimes cancer cells break away from the original tumor and travel to other areas of the________(8),where they keep growing and can go on to form new tumors.This is how cancer__________(9).The spread of a tumor to a new place in the body is __________(10)metastasis（转移）.People with cancer may feel pretty sick at times一but can usually still do lots of normal things._________(11)they are very sick,kids and teenagers with cancer may still be able to go to school. They may be tired or bruise（出现青肿）easily, but they __________( 1 2) sometimes go to camp , movies , and sleepover（在外过夜的）parties. People with cancer still like the same things they did__________(13)they got sick.Cancer in kids is rare一but today,many kids who do get cancer go on living normal lives.The number of kids who beat cancer goes________(14)every year because of new cancer treatments.So a lot of kids with cancer will some day drive cars,go to college, have careers,and even get_________(15)and have families of their own._________(3) A: or B: but C: and D: though
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Which of the following is not one of the leading agricultural exports of Australia? A.Wool
B.Meat
C.Wheat
D.Grain
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