地球上最早的生命起源于（    ）

如图，将△ABC绕点C按逆时针方向旋转到△A′B′C′的位置，若∠BCB′=30°，则∠ACA′的大小为（　　）

阅读纳兰容若的这首词，完成后面小题

木叶纷纷归路，残月晓风何处。

消息半浮沈①，今夜相思几许。

秋雨，秋雨，一半西风吹去。

     【注释】①浮沈：即“浮沉”。意谓消息隔绝。

请仔细阅读下列各小题，从A.B.C.D中找出其相对应的选项。

    You don't have to be bored on a rainy day. Here are some new ideas:

    Tell stories. You might tell stories you have heard before, or you might make up some wonderful stories.

    ①___________. You can learn to cook a pizza or maybe some cookies. Give your friend a chance to help in the kitchen and make something tasty.

    ②___________. You might write stories on your own and then read them aloud to others, or you might write a story together.

    ③____________. Think of some scenes and then play a game. Act as teachers, doctors, nurses or policemen. You can dress up in whatever you may have.

    ④____________. Pick out some music and dance around in the room. You can also sing while others are dancing.

So on the next rainy day, try some of these ideas for a day full of fun!