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48.The conference ________ a full week by the time it ends.

A. must have lasted

B. will have lasted

C. would last

D. has lasted

 

答案:B
提示:

題目考查將來(lái)完成時(shí)的意義用法。

 


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We hear a lot about ten pregnancies and abortions. The word “abortion” brings varied images but the word “pregnancy” paints a baby. Everyone knows what a baby is but the difficult question is, when is a baby a baby?

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In the second three months, the second trimester, eyebrows, eyelashes and hair are growing. The heart can be heard with a special device. Arms and legs are well developed. The baby is very active and can respond to noises outside the womb. By the end of this trimester, the limbs are well-developed and the baby tries them out regularly. He can also cough and hiccup. Some abortion are still performed at this stage of pregnancy.

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