问题
单项选择题 A2型题
关于光镜的使用，下列哪项有误（）
A.用显微镜观察标本时，应双眼同睁
B.按从低倍镜到高倍镜再到油镜的顺序进行标本的观察
C.使用油镜时，需在标本上滴上香柏油
D.使用油镜时，需将聚光器降至最低；光圈关至最小
E.使用油镜时，不可一边在目镜中观察，一边大幅度下降镜筒或上升载物台
答案
参考答案：D
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关于光镜的使用，下列哪项有误（）
A.用显微镜观察标本时，应双眼同睁
B.按从低倍镜到高倍镜再到油镜的顺序进行标本的观察
C.使用油镜时，需在标本上滴上香柏油
D.使用油镜时，需将聚光器降至最低；光圈关至最小
E.使用油镜时，不可一边在目镜中观察，一边大幅度下降镜筒或上升载物台
参考答案：D
信息归纳 请阅读下面这篇文章，根据所提供的信息，完成下面表格。 If you go to London, you will see a lot of buses and cars on the road.You will also see lots of bikes because more and more people travel by bike.There are a lot of reasons for this.First, it's not expensive to buy a bike and it is quick, too.You often have to wait for a bus for half an hour.After you get on the bus, there are so many other buses and cars on the road that the bus moves very slowly.The underground train is quick but often crowded. I traveled to work by bus for about four years.I often arrived at work late and tired.Then one day, about two years ago, a friend of mine said, “I go to work by bike every day.Please come and join me.” “But my bike is old, and there are so many buses and cars on the road.I'll feel frightened，” I answered.“You needn't feel afraid.If you follow me and we ride slowly, you will be fine，” he said. The next day I bought a new bike.Although we went slowly, we arrived at work soon.It took 40 minutes to go by bus, but only half an hour by bike. Now I love riding a bike to work.I arrive at work quickly and I've saved a little money, and more importantly, I feel healthy.Many people think my idea is good and maybe you will see more bikes on the road in the future. Information Card
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