下列是四位学生设计的实验方案，你认为可行的是（ ） A．把燃着的木条伸入某无色气

小题1: What time will drinks be served?

A．At 5:30

B．At 7:30

C．At 8:15

D．At 12:00小题2: You can do the following things EXCEPT ______________________.

A．bringing your swimming clothes

B．dancing with jazz music

C．taking a taxi to the party

D．wearing jeans and T-shirts小题3: Which is the following is NOT true about the party?

A．It is Nicola’s 16^th birthday party.

B．It is a swimming pool party.

C．It will be held at Hillview Hotel.

D．You must pay for the towels that the hotel will provide you.

经过科学家的鉴定和统计，地球上的植物大约有______多万种，动物约有______多万种．植物包括______、______、______和______；动物包括______和______．

用如图的浓盐酸配制一定质量20%稀盐酸，实验时不需要的仪器是（　　）

A．胶头滴管

B．量筒

C．烧杯

D．电子天平

政府预算执行的支出机构主要是

A．各级财政部门

B．财政部

C．中央银行

D．中国银行

变压器对（）的变换不起作用。

A.电压

B.电流

C.功率

D.阻抗