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2.(2005年·常州市)天地万物,五光十色.关于光,下列说法错误的是   (   )

  A.太阳光是由多种色光组成的  B.可通过三棱镜使太阳光发生色散

  C.光是一种电磁波       D.白光是单色的光

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1.小明学了光的色散之后,小明想回家再做一下这个实验,但家里没有三棱镜,下列器材可代替三棱镜的是   (   )

  A.玻璃砖   B.一盆水和平面镜  C.凹面镜   D.凸面镜

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15、----    I go back before lunch?

----No,I don’t think you   .

A、Need;must   B、Do;need to   C、Must;have to     D、May;ought to

1-----5ADCAB    6----10CDCBA    11---15ABBCC

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14、----Why didn’t come to my party?I was so disappointed at your absence.

----I’m very sorry.I   but I had a visitor at the last minute.

A、would like have   B、would like to   C、would like to have  D、would like

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13、Johnny,you    play with the knife,you   hurt youtself.

A、won’t;can’t  B、mustn’t;may    C、shouldn’t;must    D、can’t;shouldn’t

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12、The taxi   only hold six passengers.It is full.You   take the next one.

A、may;may   B、can;may   C、may;can   D、must;can

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11、I wish to go home now,    I?

A、may    B、can’t    C、must   D、do

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10、Sorry,I’m late.I    have turned off the alarm clock and gone back to sleep again.

A、might    B、should    C、can    D、will

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9、----He seems to be a student.

----No,he    .

A、used to    B、used to be    C、used to have    D、used to have been

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8、----Were you shown around Venice in a boat with those American tourists?

----No,but I wish I   .

A、am   B、were    C、had     D、should

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