确定一元线性回归方程中回归系数的方法为（)。A．二次平均B．基期加权C．最小二乘法D．报告期加权

A flight from one country to another country is called a ()

A.domestic flight

B.international flight

C.global flight

D.countries flight

Owing to the storm, the flight was _____ for one and a half hours.

A. stopped

B. given

C. delayed

D. Cancelled

We can infer that______.

A．after this space flight, Spaceship One will get the $10m Ansari X Prize

B．it is dangenms for a spaceship to reenter the earth atmosphere

C．Terence will be very safe on the flight

D．Spaceship One is just an ordinary plane

She was the only one _____ the crash.

A.survived

B.surviving

C.to survive

D.survive

Which of the following is TRUE of Spaceship One？

A．Spaceship One is the world's first spacecraft.

B．The purpose of its flight is to collect money for the charity.

C．The purpose of its flight is to compete for a prestigious space travel prize.

D．Spaceship One has never flown.

听力原文：Isn' t her flight delayed one hour？

(A) That' s what I heard.

(B) One hour ago.

(C) I don't like flying.

(29)

A．

B．

C．

They were united ______ one and finally drove the invaders out of their country．

他们团结一心，终于把侵略者赶出了国土。

The doctor had almost lost hope at one point, but the patient finally ______.

A．pulled out

B．pulled through

C．pulled up

D．pulled over