题目内容

【题目】But at last the determination and patience of the scientists paid off in 1996 with a b（突破）-the cloning of Dolly the sheep.

【答案】breakthrough
【解析】前面有冠词，所以判断用名词形式。所以填breakthrough.

练习册系列答案
相关题目

【题目】_______ you have grown up, you can make decisions by yourself.

A. Even if B. Although

C. Now that D. As soon as

【题目】This is the third time he ______ late this month! He has to be reminded.

A. is B. have been

C. has been D. will be

【题目】In the past few years, several Non-Governmental Organizations ______ all over the world.

A. have founded B. have been founded

C. are founding D. are being founded

【题目】By the time California e（选举） to become the thirty-first federal state of the USA in 1850,it was already a multicultural society.

【题目】 Tom kept quiet about the accident _____ lose his job.

A. in not order to B. in order not to

C. in order to not D. not in order to

【题目】They did a good job. More than one student ______ praised by the teacher.

A. was B. were

C. is D. has

【题目】The pictures ________ us of the days ______ we spent in Beijing.

A. remember; that B. warn; when C. remind; when D. remind; that

【题目】______ made the dining room extra special is its polished wooden floor.

A. What B.That C.Who D. Which

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网