B. moment C. past D. birthday
10. A. means B. way
C. approach D. method
11. A. hardly
B. suddenly
C. formally
D. formerly
12. A. forbidden B. allowed
C. relaxed D. promised
13. A. follow B. accompany C. invite
D. require
14. A. interested B. educated C. surprised D. loved
15. A. Since
B. While C. Although D. Unless
16. A. expert B. sponsor C. guest
D. owner
17. A. violin
B. magazine C. flower D. guitar
18. A. even though B. as if
C. as long as
D. as well as
19. A. through B. across C. over D. under
20. A. jump B. tremble C. gesture D. dance
(三)阅读理解:Since Dolly the sheep was cloned by Scottish scientists in 1997, cloning has been talked about all over the world. However, many people still do not fully understand cloning. This article describes what cloning is and what it means for people around the world.
There are three types of cloning, DNA cloning, reproductive cloning and therapeutic cloning. DNA cloning had been conducted by scientists since the 1970s. It involves taking one part of a person’s or an animal’s DNA梐 single gene梐nd placing it where it can reproduce itself many times on its own. This type of cloning has helped scientists produce body parts and organs in laboratories.
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