读一读，选一选。( ) 1. Have some French fries.(

下列哪一位生物学家是“血液循环”的发现者（　　）

A．沃森

B．达尔文

C．哈维

D．拉马克

__________, Gao Xiaosong, a famous musician, was sentenced to 6-month imprisonment–the most severe punishment about drunk driving–on June.1.

A public figure though is he               B. A public figure though he is

C. Public figure he is though                  D. Public figure though he is

工程费用及其支付的特点主要有______。

A．单件性计价支付

B．一次性计价支付

C．多次性计价支付

D．批量性计价支付

简述为什么日常生活活动在幼儿园课程中占据重要的地位。

操作旋转机床时戴手套的行为是否正确？为什么？