A. And much of that may need only to be heated before it is ready to eat.

B. Yet sometimes, they may eat the same foods.

C. In South America, there is a very poisonous plant.

D. You may have eaten some of the food yourself.

E. There are hot-dog stands on the islands of Sumatra as well.

F. Or you may live in a house.

Mr. Martin wants to return home in two years.

• A、True

• B、False

• C、Not Given

The American Navy experiment measured the ocean with

• A、heat

• B、light

• C、rope

• D、sound