用适当的短语完成句子。

hear about, millions of,  try doing sth. go around,

more than, send sb.(a) message(s), try to do sth.

1. I haven't seen Tom for a long time, so I ______ him ______ .

2. The earth is a planet and it ______ ______  the sun.

3. There has been life on earth for ______ years.

4. There is ______  one galaxy.

5. They have ______  send information to us.

6. —Tom, I've just heard that scientists have sent a spacecraft to Mars.

    —Really?I haven't ______  this yet.

图中示意某岛的地理位置。读图完成下题。

图示岛屿西南部降水丰沛，主要是因为（）

①盛行西风

②地形抬升

③暖流增湿

④反气旋活跃

A.①②

B.②③

C.③④

D.①④