《坎特伯雷故事集》的作者是（）A、弥尔顿时 B、乔叟 C、斯宾塞 D、拉伯雷

用所给单词的适当形式填空。

1. It's three thirty. Please stop _______ (work) and have a relax.

2. I'm _______ (stress) out because my English isn't improving.

3. It is snowing ________ (heavy) outside. Let's stay at home.

4. All the ________ (sing) are from Singapore.

5. What are the ________ (different) between the movies and the TV plays?

回族人信奉的是伊斯兰教，伊斯兰教的诞生地是[ ]

A．阿拉伯

B．麦加

C．麦地那

D．耶路撒冷

蒸汽在汽轮机内做功的原理分为冲动作用原理和反动作用原理。

放射性同位素衰变时，同位素的原子核以（）方式蜕变。

A.粒子发射

B.K俘获

C.淹灭辐射

D.A和B