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3.2009年“世界環(huán)境日”的主題是:“團結起來應對氣候變化”。下列認識不正確的是

  (A)植樹造林,嚴禁亂砍濫伐

  (B)在生產(chǎn)和生活中提倡使用節(jié)能技術和節(jié)能用具

  (C)提倡乘坐公交車、騎自行車或步行的方式出行

  (D)開發(fā)新能源,禁止開采和使用化石燃料

試題詳情

2.下列有關空氣各成分的說法正確的是

  (A)氧氣的化學性質(zhì)比較活潑,屬于可燃物

  (B)氮氣的化學性質(zhì)不活潑,可用于食品防腐

  (C)空氣質(zhì)量報告中所列的空氣質(zhì)量級別越大,空氣質(zhì)量越好

  (D)二氧化碳在空氣中含量增多會引起溫室效應,屬于空氣污染物

試題詳情

1.“民以食為天”。下列過程中發(fā)生了化學變化的是

  (A)淘米   (B)洗菜   (C)蘋果榨汁   (D)葡萄釀酒

試題詳情

30.      was a well -known fact.

    A.That their team was weak        B.That their team being weak

    C.Their team was weak           D.If their team was weak

[答案]:

1 C     2 B     3 D     4 C     5 D     6 A     7 B     8 B     9 A     10 B

11 B     12 C        13 D        14 D        15 B        16 B        17 B        18 B        19C     20 A

21 B        22 B        23 A        24 C        25 B        26C     27 D        28 C        29 B        30 A

試題詳情

29.      there is life on another planet is almost impossible.

    A.How                       B.That

    C.Why                       D.Whether

試題詳情

28.The problem is       will go .

    A.that                       B.that who

    C.who                    D.whoever

試題詳情

27.      nothing to do with us .

    A.What he did is                B.What he has done

    C.What did he do               D.What he has done has

試題詳情

26.Word came      I was wanted at the office.

    A.which                      B.why

    C.that                       D.whether

試題詳情

25.       told yuou that was lying .

    A.who                       B.whoever

    C.Anyone                     D.The person

試題詳情

24.The town is no longer       it was ten years ago.

    A.which                      B.that

    C.what                   D.when

試題詳情


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