Question

Man has invented four kinds of satellites. The first kind of satellite studies the geography of the earth. They are 1      to make maps. They also help countries to see w 2      they may find oil or gold.

The second kind of satellite is used to 3      /gaid/ ships and planes. A ship or a plane can send a m 4      to the satellite, and the satellite can find out where the ship or the plane is.

The third kind studies the 5       These satellites watch clouds and strong winds moving 6      /a'kros/ the earth. They 7      (警告） countries to make preparations(准备)when very bad weather is coming.  

The last kind is used 8 communication. Telephone ('alls between countries can \>v sfiit by these satellites. Some can carry 9 (百) of calls at the same time. The call is sent to the satellite，then the satellite sends it to a station in the country and this country is being phoned. These satellites also carry pictures;they can 10 (接收)and send about eight programs at a time.

1._______ 2.________ 3.________ 4.________

5._______ 6.________ 7.________ 8.________

9._______ 10.________

Answer 1

1. used 2. where 3. guide 4. message 5. weather 6. across 7. warn 8. for 9. hundreds 10, receive