单选题 As the plan describes, China will make steps forward in science. China spacemen will land on the ______ (8). China might build its own big planes. If you go to university ______ (9) air in 2010, you will probably find that the plane is not from Boeing or Air Bus. It's made in ______ (10).

单选题 According to the third paragraph, birds including geese are used in many ways EXCEPT ______.

单选题 Which of the following is NOT true?

单选题 As the plan describes, China will make steps forward in science. China spacemen will land on the ______ (8). China might build its own big planes. If you go to university ______ (9) air in 2010, you will probably find that the plane is not from Boeing or Air Bus. It's made in ______ (10).

单选题 The trainer usually gives the animals a piece of candy or fruit ______.

单选题 As the plan describes, China will make steps forward in science. China spacemen will land on the ______ (8). China might build its own big planes. If you go to university ______ (9) air in 2010, you will probably find that the plane is not from Boeing or Air Bus. It's made in ______ (10).

单选题 in the rural areas will soon drink running water ______ dirty well water.

单选题 According to some scientists, many animals may be trained to do given jobs if they know ______.

单选题 What made scientists think that animals can be trained to work for us one day?