__     he has limited technical knowledge, the old worker has a lot of experience.

A. Since                  B. Unless                 C. As                      D. Although

 As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.

A. primary      B. alternative       C. instant          D. unique

 The old lady’s hand shook frequently. She explained to her doctor          this shaking had begun half a year before, and         , only because of this, she had been forced to give up her job.

A. when; how     B. how; when     C. how; how      D. why; why

 Mary kept weighing herself to see how much _______ she was getting.

A. heavier               B. heavy           C. the heavier           D. the heaviest

 —How is everything going on with you in Europe?

—Quite well. Not so smoothly as I hoped, __________.

A. though                B. instead                C. either                  D. too

 At times ,worrying is a normal, ________response to a difficult event or situation—a loved one being injured in an accident , for example.

A．effective              B．individual             C．inevitable             D．unfavorable

 There was such a long queue for coffee at the interval that we           gave up .

A. eventually            B. unfortunately       C. generously           D. purposefully

 This           girl is Linda’s cousin.

A．pretty little Spanish                              B．Spanish little pretty

C．Spanish pretty little                              D．little pretty Spanish

 I must be getting fat—I can ______ do my trousers up.

A. fairly                     B. hardly                 C. nearly                    D. seldom

 —What’s the area and population of the US？

—The US is about the same size as China, but its population is five times ______.

A. smaller  B as little.  C. as few   D. bigger.