[填空题]They are considering (buy) ______ the house before the prices go up.

[单项选择]They are considering ______ the house before the prices go down.
A. selling
B. of selling
C. to sell
D. over selling

[填空题]Before considering this question it is interesting to review briefly the evolution of (1) ______
the mind as the instrument. The commonest way that has been used to find out the
relative intellectual level of creatures at different stage of evolutionary complexity has (2) ______
been to study the way they behave when giving different kinds of puzzles. For example, (3) ______
an ant possesses a complex routine of behaviour, but can it think The answer is what (4) ______
if an ant is forced to go through a maze of passages, many of which are dead ends,
on its way to its nestle, it starts by making a lot of mistakes and taking a great many (5) ______
wrong turnings. In the end, however, after it has to worry its way through often (6) ______
enough, it does learn to get to its nest without going into any of the blind alleys.
As one moves up the evolutionary scale the test of mind-power exemplified by solving (7) ______
the problem of getting through a

[填空题]They are considering (buy)（）a car so that they won’t have to take the crowded buses.

[单项选择]A. They will buy a new house after they buy a car.
B. They will buy a bigger house.
C. They won’t buy a new house because they can’t find a bigger one.
D. They won’t buy a bigger house because they don’t have enough money.

[填空题]

What was their house before they modernized it

[单项选择]A. To buy a new house. B. To buy an old house.
C. Not to buy a house. D. To save money.

[单项选择]Before we can decide where to buy our materials, we require as much information as we can get on the suppliers.
A. 我们需要从各供应商处得到足够的信息，之后才能决定从何处购买材料。
B. 在决定从何处购买材料之前，我们需要各供应商给我们尽可能多的信息。
C. 我们可以先决定在哪里购买材料，然后再从卖方那里找出所有的相关信息。
D. 在决定从何处购买材料之前，我们需要收集尽可能多的关于各供应商的信息。

[单项选择]Most people buy a lot of gifts just before Christmas. But some people think they buy too much. They have started a special day called Buy Nothing Day. They don’t want anyone to go shopping on that day.
Buy Nothing Day is November 29th. It’s 25 days before Christmas. The idea for Buy Nothing Day started in Vancouver, British Columbia. Now people all over the United States celebrate Buy Nothing Day. In California, parents and children get together to read stories, sing songs and paint pictures. The children talk about why they don’t need a lot of toys.
This year in Albuquerque, New Mexico, high school students wanted to tell other students about Buy Nothing Day. They organized a simple dinner to give people information about Buy Nothing Day. They asked restaurants in the neighborhood to donate (赠送) the food. They made posters (海报) and talked to other students about it. The dinner was a big success, and many students agreed not to buy anything on November 29th. The students at t