根据国际收支说的有关原理，以下关于各类因素对汇率变动的阐述正确的是( )。

A．外国国民收入增加将导致本币贬值

B．本国利率下降将导致本币升值

C．本国价格水平上升将导致本币升值

D．预期本币未来贬值将导致本币即期汇率下降

按括号内的要求改写句子。

1. We had to have an English test this morning. (变为一般疑问句)

    ______ you ______ to have an English test this morning?

2. There is something interesting in today's newspaper. (变为否定句)

    There ______  interesting in today's newspaper.

3. The boy in the river is Mr Green's son. (对画线部分提问)

    ______ is Mr Green's son?

4. The population of Tianjin is about 12 million. (对画线部分提问)

    ______ the population of Tianjin?

5. Is Uncle Wang a teacher? (用a worker改为选择疑问句)

    _______ Uncle Wang a teacher _______ a worker?

6. I used to read newspapers after supper. (改为一般疑问句)

    _______  you _______ read newspapers after supper?

7. Lucy usually cleans the cage every two days. (对画线部分提问)

    _______ Lucy usually clean the cage?

8. Let's go to the cinema, _______? (补充反意疑问句)

9. —Do you have a bike? (作肯定回答) 

    —_______, I _______.

10. —Have you been to Beijing? (作否定回答)

      — _______, I _______.