题目

下列变化属于化学变化的是（） A. 白磷自燃                   B. 空气液化制氧气     C. 干冰变成二氧化碳气体       D. 在晾干的咸菜表面出现食盐晶体 答案：ALast summer，Jenny and her friends had a bus trip to New York. She felt very relaxed on the way. They visited a museum. But it’s really crowded there and the display (展览）was not interesting at all. They went to different (不同的)restaurants to have dinner. Some food was quite delicious, but Jenny thought the fast (快的)food was awful. The weather was fine, so they went to the sea to swim. The sea was beautiful and they had a good time.(    )26.    Jenny had a bus trip to    .A.    Japan    B.    the USC. Australia (    )27.    They visited    .A.    a museum    B.    a Beijing    hutongC. the White House (    )28.    They thought the display was    A.    interesting    B.    boringC. crowded (    )29.    They ate dinner    .A.    at home    B.    in the museumC. in restaurantvS(    )30.    They_ and    had    a good time.A. went to swim B. went home C. visited a museum