刚毅ɡānɡ yì

Read and choose the suitable sentences. (根据句意选择恰当的句子)

1. 当你想问对方正在做什么时，可以说：______________ [ ]

A. What are they?    

B. What are you doing?

C. What are you going to do?

2. 当你想问对方有什么时，可以说：___________________[ ]

A. Have you got a camera?    

B. What do you haw

C. I have an English book.

3. 当你想表达我们正在做实验时，可以说：______________  [ ]

A. We are doing an experiment.    

B. We are catching!

C. We are counting insects.

—Mum, what’s the time now?

—It’s already half past seven. Be quick,_____ you will be late.

A．if

B．or

C．and

D．until

经动脉导管化疗药物灌注术治疗胰腺癌，能明显缓解疼痛，改善生活质量的药物是()

A．丝裂霉素

B．5-氟尿嘧啶

C．阿霉素

D．羟基喜树碱

E．健择

（）方式频带较宽，适合进行点对点的通信，成本低。

A.光缆

B.无线通信

C.同轴电缆

D.微波通信

输电线路工程施工区布置标准化有哪些要求？