[单项选择]First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.
A. dedicated to raising
B. dedicated raising
C. dedicated to raise
D. that dedicates to raising

[单项选择]First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.


A. dedicated to raising
B. dedicated raising
C. dedicated to raise
D. that dedicates to raising

[单项选择]______ that another earth satellite has been put into orbit.
A. Reporting
B. To be reported
C. To report
D. It is reported

[单项选择]Where was the first Thanksgiving Day held


A. In Pennsylvania.
B. In Massachusetts.
C. In Missouri.
D. In Indiana.

[单项选择]The celebration of Thanksgiving Day has been observed to thank ______.
A. God
B. their ancestors
C. their parents
D. the pilgrims

[单项选择]A client is in the first postoperative day after a total laryngectomy and radical neck dissection. Which of the following is a priority goal ？（）
A. Communicate by use of esophageal speech.
B. Improve body image and self-esteem.
C. Attain optimal levels of nutrition.
D. Maintain a patent airway.

[单项选择]The story you told me the other day has yet to be ______.
A. confessed
B. confirmed
C. conquered
D. conformed

[单项选择]The news you told me the other day has yet to be ______.
A. affirmed
B. informed
C. conformed
D. confirmed

[单项选择]Since this is the first time she has made such a mistake,, you ______ forgive her.
A. could as well
B. can as well
C. should as well
D. might as well

[单项选择]

The Earth has a force that pulls thing toward itself. We call this force gravity. This is something we live with all the time, and we take it for granted and hardly ever think about it . But it is a most important factor in rocket operation and must overcome if we are to get anywhere in space, or off the ground at all.         
Take the throwing of a ball as an example. The harder the ball is thrown, the faster and higher it will go. What is the secret Its speed. If we could throw the ball hard enough it would go up and up forever and never come down. The speed at which it would have to be thrown do this is known as escape speed. Of course, we cannot throw a ball hard enough because the speed required to escape completely from the Earth's gravity is seven miles per second, or over twenty-five thousand miles per hour.         
Once escape speed has been reached by a space
A. To travel as fast as it can.
B. To overcome the Earth gravity.
C. To get away from the air resistance.
D. To have strong power in its operation.