在人类对物质运动规律的认识过程中，许多物理学家大胆猜想、勇于质疑，取得了辉煌的成就，下列有关科学家及他们的贡献描述中正确的是
| A．安培发现了电流的热效应规律 |
| B．奥斯特由环形电流和条形磁铁磁场的相似性，提出分子电流假说，解释了磁现象电本质 |
| C．开普勒潜心研究第谷的天文观测数据，提出行星绕太阳做匀速圆周运动 |
| D．伽利略在对自由落体运动研究中，对斜面滚球研究，测出小球滚下的位移正比于时间的平方，并把结论外推到斜面倾角为90°的情况，推翻了亚里士多德的落体观点 |
Which word of the following doesn't have the same stress as the others？（ ）
| A． |
Wisdom． |
B． |
Suggest． |
C． |
Stranger． |
In the following words，which underlined letter has a different sound from the others？（ ）
| A． |
fact |
B． |
attract |
C． |
alive |
Which pair of the words with the underlined letters has the same sound？（ ）
| A． |
breath meat |
B． |
huge hug |
| C． |
cheat chess |
D． |
Here is a survey（调查） about how the 1，000 students from No．2 Middle School go to school on weekdays．One third of the students going to school by bike are girls．Then according to the form below，_____boys go to school in the same way．（ ）
|
By bus |
By bike |
By car |
On foot |
|
40% |
|
36% |
9% |
| A． |
150 |
B． |
100 |
C． |
50 |
Everyone should pay attention to safety．To keep yourself safe in the P．E．class you are
supposed to _______．
①stretch before exercising
②wear running shoes and comfortable clothes
③push other students on purpose
④drink much water immediately after doing sports
⑤protect your knees and head when skating．
| A． |
①②⑤ |
B． |
②③⑤ |
C． |
②③④ |
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