What do you ______ on the weekend?
A. doing
B. do
C. /
答案：B
Let's _____ a basketball match tonight. [ ]
A. see
B. read
C. watch
D. look
蒸发量大于( )t/h的锅炉，至少装设两个安全阀。
A．0.5
B．1.0
C．2
D．4
