题干

下列关于硅酸的说法正确的是(  )

A:硅酸可以通过SiO2和水化合反应直接制得

B:可用反应Na2SiO3+2HCl═2NaCl+H2SiO3↓制取硅酸

C:因为硅酸难溶于水,所以它不能与NaOH溶液反应

D:干燥剂“硅胶”的主要成分是硅酸钠

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答案(点此获取答案解析)

B

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        A high school history teacher once told us, “If you make one close friend in school, you will be most fortunate. A true friend is someone who stays with you for life."1 teaches that he was right. Good friendship is just not easily 2

        It is possible that we simply do not stay in one place long enough food 3friendship to4. However, there can be5disagreement on the need for each of us to think carefully about the kind of friendship we want.

        To most of us, friendships are considered very important, but we need to have clear in our 6 the kinds of friendship we want. Are they to be close or7at arm's length? Do we want to 8ourselves or do we want to walk on the surface? For some people, many friendships on the surface are 9enough—and that' s all right. But at some point we need to10that our expectations are the same as our friends' expectations. The sharing of11experience 12our tears as well as our dark dreams is the surest way to deepen friendships. But it 13be undertaken(进行) slowly and carried on only if there are 14of interest and action in return.

          What are some of the 15of friendship? The greatest is the attraction to expect too much too soon. Deep relationships 16time. Another“major difficulty" is the selfishness to think one “possesses" the other, including his time and attention. Similarly, friendships 17actions in return. In 18words, you must give as much as you take. Finally there is a question of taking care of. Unless you spend 19time together, talking on the phone, writing letters, doing things together, friendships will die20.

同类题4

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

    Have you got any wonderful plans for your coming summer vacation? Here are some wonderful films for you to kill time.

Away We Go

    With a baby on his way, a young couple, Burt and Verona, look at their lives and are puzzled about what they really want. So they hit the road and seek a place to call home. On their journey, they visit a handful of characters and learned a lot.

It's about taking the scenic route in life, preparing for the hope and excitement and fear of new beginnings, while never forgetting to look out of the window.

Orphan

    Esther, a bright and well-behaved child, however, is not as innocent as she appears. Soon after being taken home, the peace of her adoptive family is completely changed You want a good horror film about a child from hell Then you got one! Do not, in any cases, take children to see it.

                                                                                          500 Days of Summer

    Tom is in love with Summer from the moment he sees her. Can he accept that she simply likes him for now, not for forever The movie is about Tom wrestling with that reality. Tom remembers his love, Summer, as a series of joys and bafflements (疑惑). But Summer is just herself and he cannot have her.

    Here is a rare movie that begins by telling us how it will end and is about how the hero has no idea why.

2012

The director Roland Emmerich successfully dresses an old story with an old Mayan prediction, which is believed by many to happen in the coming 2012 and as a result, attracts millions of people into the cinema.

    It's just an entertaining Hollywood blockbuster (大片)with plenty of jokes, instead of a description of what the end of the world is really like. Don't take it too seriously!