1.The things ____ are not very expensive.

A.are on show    B.which on display    C.are on display    D.that are on show

2.Dinosaurs _____,can you explain their _______?（消失）

3.(1)The old underground building ______ last year.

(2)When was the PLA _____?

(3)Have you ____ your lost ticket?

(4)The new bridge will ______ next year.

A.was found   B.was founded   C.be founded   D.found    E.founded

4.(1)Is this the exit _____ that building?

(2)This entrance is also used ______ an exit.

A.to          B.for           C.as            D.by

5.(1)These eggs were _____ by that hen.(下）

(2)The hen ______ on the ground and _____ an egg just now.(躺在地上下了一个蛋）

6.He was born in the ________(十九世纪七十年代）

参考答案：

1.D    2.disappeared,disappearance    3.A E D C   4.A C   5.(1)laid(2)lay,laid   6.1970s/1970's