“五•一”假期，小英随爸妈外出旅行，途中她发现很多现象都与我们学过的物理有关，并写下一些相应的旅行日记，你认为她的日记中描述不妥当的是

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“五•一”假期，小英随爸妈外出旅行，途中她发现很多现象都与我们学过的物理有关，并写下一些相应的旅行日记，你认为她的日记中描述不妥当的是（　　）

A：汽车的方向盘是个轮轴

B：汽车行驶中，路边的树木向后飞驰而去，这是因为我选择了汽车为参照物

C：汽车经过桥梁时发现如图甲所示的标示牌是对汽车的限重

D：有十分钟时间，汽车速度仪表指示如图乙，因此这段时间汽车一定在做匀速直线运动

上一题下一题 0.0难度选择题更新时间:2015-09-24 06:34:32

D

阅读下列短文，从下面每题的A、B、C、D四个选项中选出最佳答案。

Students in Suzanne Middle School have carried out many interesting surveys online. Here are some of them.

Shopping online or in physical stores (实体商店)? Online shopping is changing how people buy things today. If you need new clothes but don't want to go out, your smartphone or computer is here to help you. However, according to a survey of 15,000 consumers between the age of 13 and 21 in 16 countries, most of them still prefer physical stores.
	Going offline easy or difficult? Technology has linked us in ways we never imagined. People spend more and more time on smartphones and computers but pay less attention to their children. Some US parents have felt the need to go offline. However, a recent survey showed that despite their best efforts, most of them couldn't stop using their smartphones and iPads.
Who makes you laugh the most? We all need a good laugh to cheer us up now and then. People are looking for different ways to get some fun in everyday life. Many like to watch comedies or read jokes. But a survey of 1,258 US teenagers found that 70 percent of them said it is their friends that make them laugh the most.
	Do you want to be a boss? We have read quite a lot of news about teenagers setting up their own companies. Although most teenagers haven't started to do the same thing, it doesn't mean that they don't want to. According to a survey of 1500 US teenagers from the age of 13 to 18, 79 percent of them said they would like to have their own business.