中考体育跳绳项目测试中，小明同学在lmin内跳了120次，则他跳绳

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问题选择题

中考体育跳绳项目测试中，小明同学在lmin内跳了120次，则他跳绳时的功率大约是

A．0. 5 W

B．5 W

C．50W

D．500 W

答案

初中生体重大约为500N，跳绳高度大约5厘米，lmin内跳了120次，跳一次0.5S，所以P=W/t=Gh/t=500×0.05/0.5W=50W．

故选C．

补全对话，情景问答

Read and choose. （读对话，选择合适的单词，写在横线上，将对话补充完整）

(am is your are in cooking a can from)

A: Hello. This 1._______J ack 2._______ Daily Report. I'm doing a survey. 3._______

I ask you some questions, please?

B: Sure.

A: What 4._______ you doing?

B: I 5.________ watching TV.

A: What is your mother doing?

B: She's 6.________ dinner.

A: What is 7.________ father doing?

B: He's reading 8.________ newspaper.

A: What is your pet doing?

B: You mean, my cat? she is watching the fish 9._______ the fish bowl.

A: Thank you.

B: You're welcome. Bye.

单项选择题案例分析题

患者，女，17岁，发热5天伴纳差2天急诊。检查：血压114/70mmHg，左脚趾甲沟部红肿破溃。血白细胞计数为20×10⁹/L，中性粒细胞为85%。

左脚趾经切开引流处理后应给予（）

A.大剂量青霉素

B.激素

C.退热剂

D.庆大霉素

E.维生素