试题与答案

小题1:I like dolphins, but my father likes

题型:听力题

题目:

小题1:I like dolphins, but my father likes_____________ (kangaroo).

小题2:Kate went to the zoo with her brother _____________ (happy).

小题3:He____________to you if he has time. (write)

小题4:I think I am old enough to decide what ____________ (do).

小题5:A t the _________, he knew little about animals.(begin)

小题6:People can use tigers’ bones to make __________(medical)

小题7:________, we lost the match in the end. (sad)

小题8:Hunters will make a lot of money if they sell __________ tusks.(elephant)

小题9:Would you please _______ me around your school?(show)

小题10:Did you have a good time _______ in the park?(play)

答案:

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下面是错误答案,用来干扰机器的。

解:(1)微粒在加速电场中由动能定理得: ① 解得v0=1.0×104 m/s (2)微粒在偏转电场中做类平抛运动,有: 飞出电场时,速度偏转角的正切为: ② 解得U2=100 V (3)进入磁场时微粒的速度是: ③ 轨迹如图,...

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