下课后我常常去操场打pái______球。
参考答案:排
You made many mistakes in your English exams. What will you ___them?
A.help with
B.do with
C.take with
D.bring with
HIV复制的必需物质是()
A.gap基因
B.rev基因
C.逆转录酶
D.整合酶
E.蛋白酶