[求助]一些语法题

xiaobaitu0529 · 发表于 2003-9-23 10:00:00

（It seems） probable that prehistoric people （who discovered）, by trial and error, which plants （were poisonous） and which had （some） medicinal value.
我不知道 B 如何改。
The （migration route） of the first humans to occupy North America took （them across） a land bridge that once （was connected） Asia with （what） is now Alaska.
C 怎么错了？
（Although） absolute zero cannot （actually） be reached, approximations of （less than） 0.001 degrees Celsius above absolute zero have been （created） the laboratory.
不太明白怎么改 D
It is (highly) recommended that any person (exploring) a cave (carries) a source of (artificial) light.
答案说 C 错了，要把 carries 改为 carry，不太明白，为什么？明明是单数呀。
Education in the United States is overseen by (local) school districts, (which) follow (regulations) mandated by their respective state (government)。
D 怎么错了？难道不能说 state government 吗？
precipitation in (mountanious) regions that (collects) in a number of (small) valleys that (are called) rills and gullies.
collects 没错呀？

chipmunk · 发表于 2003-9-23 10:29:00

1) B--> Remove 'which';
2) C--> 'connected';
3) D--> should add 'in' the laboratory;
4) C--> this claus omit 'should', so 'carry' is right;
5) D--> 'governments'?, just to match 'districts'
6) B--> 'collected'

[求助]一些语法题

[求助]一些语法题

所属分类: TOEFL / IELTS

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