题目内容

______ is the author of the book Syntactic Structures.

A. Edward Sapir
B. Noam Chomsky
C. J.R. Firth
D. M.A.K. Halliday

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One Good Reason to Let Smallpox Live
It's now a fair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glorious achievement of 1980, when smallpox was eradicated in the wild, by destroying the killer virus in the last two labs that are supposed to have it — one in the US and one in Russia. If smallpox had truly gone from the planet, what point was there in keeping these reserves?
(51)reality, of course, it was naive to(52)that everyone would let(53)of such a potent potential weapon. Undoubtedly several nations still have(54)vials.(55)the last "official" stocks of live virus bred mistrust of the US and Russia,(56)no obvious gain.
Now American researchers have(57)an animal model of the human disease, opening the(58)for tests on new treatments and vaccines. So once again there's a good reason to(59)the virus — just in(60)the disease puts in a reappearance.
How do we(61)with the mistrust of the US and Russia?(62). Keep the virus(63)international auspices in a well-guarded UN laboratory that's open to all countries. The US will object, of course, just as it rejects a multilateral approach to just about everything. But it doesn't(64)the idea is wrong: If the virus(65)useful, then let's make it the servant of all humanity — not just a part of it.

A. In
B. On
C. At
D. For

入境植物报验时限为15天。()

A. 正确
B. 错误

英译汉:“certificate of damage;certificate of cargo G. A.”,正确的翻译为()。

A. with
B. /
C. in
D. on

检疫发现的我国禁止入境物,来自动植物疫区或来历不明的动植物及其产品,以及动植物性废弃物作返还来源地处理。()

A. 正确
B. 错误

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