Question

　　The world is full of variety. Trees, grasses, and leafy plants cover the earth. Above, the sun shines on the earth as it turns in the ever-changing sky. This is the familiar world that we see around us every day. It is the world that story-tellers and poets write about.

　　This world is also the world of chemistry. In this world, one form of matter changes endlessly into another. We cannot always see it happening with the naked eyes（肉眼）. Yet it is something which is taking place all the time. The millions of forms, alive or not, which exist on the earth are all made up of about one hundred basic chemical elements. The same elements are found everywhere. Only the combinations and the quantities differ. This may seem astonishing, but it is true. It is true not only of the earth but also of the whole universe.

True or false:

(1) The universe is made up of millions of chemical elements.

(　　)

(2) Poets write about the familiar world around us.

(　　)

(3) The whole universe is composed of the same kinds of elements.

(　　)

(4) We can never see the changes taking place in the matter of which the earth is composed.

(　　)

(5) Chemical changes take place on the earth only when the sun is shining.

(　　)

(6) The world we are living in is a world of chemistry.

(　　)

Answer 1

答案：F;T;T;F;F;T