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1、学英语报纸2022-2023
2、阳光英语周刊34期答案九年级
3、双语报 答案 2022 2023 高二
7．Grown-ups are ____________ good decisions but sometimes they make mistakes．（ ）
| A． | supposing made | B． | supposed making | ||
| C． | supposed to make | D． | supposing to make |
试题答案
分析 成年人应该做明智的决定，但是有时他们也会犯错误．
解答 答案是C．本题考查动词不定式的用法；题干中考查了短语be supposed to do表示"应该…"，故答案选择C．
点评 首先判断选项中的动词在句中是以谓语还是非谓语形式出现，然后根据选项在句中的功能结合非谓语的基本用法做出合理的判断．
With only about 1,000 pandas left in the world, China is desperately trying to clone (克隆) the animal and save the endangered species(物种).That's a move similar to what a Texas A&M University researchers have been undertaking for the past five years in a project called “Noah's Ark”.
Noah's Ark is aimed at collecting eggs, embryos(胚胎)，semen and DNA of endangered animals and storing them in liquid nitrogen（氮）. If certain species should become extinct, Dr.Duane Kraemar, a professor in Texas A&M University Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2,000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem，”Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A & M, the first–ever attempt at cloning a dog.
“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”
1.The aim of “Noah’s Ark” project is to________.
A. make efforts to clone the endangered pandas
B. save endangered animals from dying out
C. collect DNA of endangered animals to study
D. transfer the nuclear of one animal to another
2.The underlined word groundbreaking can be interpreted as __________.
A. especially new B. pioneering
C. damaging D. trouble- making
3.The best title for the passage may be ______.
A. China’s Success in Panda Cloning
B. The First Cloned Panda in the World
C. Exploring the Possibility to Clone Pandas
D. China---the Native Place of Pandas Forever
4.From the passage we know that _______.
A. Kraemer and his team have succeeded in cloning a dog
B. scientists try to implant a panda’s egg into a rabbit
C. Kraemer will work with Chinese scientists in clone researches
D. about two thousand species will probably die out in a century
