据《中央电视台》报道:山东某些企业在生产“龙口粉丝”时添加化肥碳酸氢铵和氨水,以

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问题:

据《中央电视台》报道:山东某些企业在生产“龙口粉丝”时添加化肥碳酸氢铵和氨水,以达到增白效果,但这两种物质均可转化成致癌物。这两种化肥属于 [ ]

A. 氮肥

B. 磷肥

C. 钾肥

D. 复合肥

考点:化肥
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下列哪一项只见于器质性心脏病()

A.窦性心动过速

B.室性早搏

C.一度房室阻滞

D.阵发性房颤

E.以上都不是

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下面哪种牙列缺损应采用蜡堤记录正确关系()。

A.缺失

B.缺失

C.缺失

D.缺失

E.缺失

题型:选择题

Londoners are great readers. They buy vast numbers of newspapers and magazines and of books --- especially paperbacks, which are still comparatively cheap in spite of ever-increasing rises in the costs of printing. They still continue to buy “proper” books, too, printed on good paper and bound (装订) between hard covers.

There are many streets in London containing shops which specialize in book-selling. Perhaps the best known of these is Charring Cross Road in the very heart of London. Here bookshops of all sorts and sizes are to be found, from the celebrated one which boasts of being “the biggest bookshop in the world” to the tiny, dusty little places which seem to have been left over from Dickens’ time. Some of these shops stock, or will obtain, any kind of book, but many of them specialize in second-hand books, in art books, in foreign books, in books on philosophy, politics or any other of the countless subjects about which books may be written. One shop in this area specializes only in books about ballet!

Although it may be the most convenient place for Londoners to buy books, Charring Cross Road is not the cheapest. For the really cheap second-hand books, the collector must venture off the beaten track, to Farringdon Road, for example, in the East Central district of London. Here there is nothing so impressive as bookshops. The booksellers come along each morning and pour out their sacks of books onto small hand carts. And the collectors, some professionals and some amateurs, have been waiting for them. In places like this they can still, occasionally, pick up for a few pence an old one that may be worth many pounds.

小题1:”Londoners are great readers” means that ___________.

A.Londoners are great because they read a lot.

B.There are a great number of readers in London.

C.Londoners read a lot.

D.Londoners are readers who read only great books.小题2:According to this passage, Charring Cross Road __________.

A.is in the suburbs of London

B.is the busiest street in London

C.contains various kinds of shops

D.is famous for its bookshops小题3:In this passage, what does the underlined part “venture off the beaten track” mean?

A.move away from a busy street

B.buy books in a most busy street

C.waste time looking for books

D.take a risk of losing one’s life小题4:On Farringdon Road, _______________.

A.you can find fine bookshops for the latest books

B.there are only small bookshops for the second-hand books

C.you can see book sellers selling books on hand-carts

D.the same books as the ones in the bookshops of Charring Cross Road are sold

题型:选择题

软炸鱼条的油温宜控制在()热左右。

A、四成

B、五成

C、三成

D、六成

题型:选择题

什么是液体的静压力?液体静压力有哪两个特性?

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