用所给动词的正确时态、语态填空
⑴Be quiet, please ! The baby____ (sleep).
⑵—What does Frank often do at weekends?
—He often____ (go) to the cinema with his parents.
⑶Andy ____ (argue) with his brother when I went to see him yesterday.
⑷She ____ (be) to her hometown several times.
⑸____ (play) computer games too much is bad for your eyes.
⑹Lucy tried ____(not make) too many mistakes in the exam.
⑺He ____  to us as soon as he gets there. (write)
⑻By the time I got outside, the bus____ (leave).
⑼I'm sure I ____  her four years ago. (see)
⑽In summer,  Miss Xia would rather ____  (stay) at home than go out.

右图是某生物组织的一个细胞,其细胞质内含有的糖类和核酸主要是（ ）

设圆$O_1$和圆$O_2$是两个定圆，动圆P与这两个定圆都相切，则圆P的圆心轨迹可能是（   ）

              
①              ②           ③              ④            ⑤

读《匆匆》，按课文内容填空，并写出所运用的修辞方法。

计算：（﹣12）+（+ $\frac{6}{5}$ ）+（﹣8）+（﹣ $\frac{7}{10}$ ）+（﹣ $\frac{1}{2}$ ）=（   ）