心肌不产生完全强直收缩的原因是心肌()。
A.为功能合胞体
B.有自律性
C.肌浆网不发达
D.呈全或无收缩
E.有效不应期特别长
参考答案:E
Last week,our school had a basketball match , our class______ any other class ,we______the first place.
[ ]
A. beat;beat
B. won;won
C.beat;won
D. won;beat