1. Multiple choice questions (3 points for each question, * * 36 points, only one of the four options given in each question meets the requirements of the topic)

The absolute value of 1 -2 is (▲).

A.- 2 BC

2. As shown in the figure, the top view of the geometric figure is (▲).

3. On April 7th, Xinhua News Agency was authorized to broadcast the full text of "Recent Key Implementation Plan of Medical and Health System Reform (2009-20 1 1 year)". for

In order to achieve the reform goal, according to preliminary estimates, governments at all levels need to invest 850 billion yuan in 2009-201year. This number can be expressed in scientific notation as (▲).

Yuan RMB

4. As shown in the figure, if, then ∠3=( ▲)

A.B. C. D。

5. In the following calculation, the correct one is (▲).

A.B. C. D。

6. The image of the inverse proportional function passes through the point (,3), so the following points are not on the image of this function (▲).