【題目】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】前面有冠詞，所以判斷用名詞形式。所以填breakthrough.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：

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

A. Even if B. Although

C. Now that D. As soon as

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】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

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】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

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

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

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

【題目】 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

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

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

A. was B. were

C. is D. has

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

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

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

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

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

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

查看答案和解析>>

同步練習(xí)冊(cè)答案