30. --- Mrs. Smith, please teach me how to draw on the computer today. 

   --- Oh, no._______. You have to get familiar with the keyboard first.

A. It is never too old to learn                             B. Think twice before you do

C. Learn to walk before you run                        D. One today is worth two tomorrows

There           be any difficulty in passing the road test Since you have practiced a lot in the driving school.

   A. shan’t          B. shouldn’t         C. mustn’t          D. needn’t

15 Million Americans Suffer from Social Anxiety

    Social anxiety disorder prevents some l 5 million Americans from leading normal social and romantic fives，a new survey finds．

  The disorder leaves many isolated(孤立)and ashamed．36 percent of those with social

anxiety disorder have suffered for l0 year's or more before seeking help，the Anxiety Disorders Association of America reports．

    “Social anxiety disorder is when somebody has a strong and long fear of social or performance situations，” Jerilyn Ross，the Association’s president and CE0，said．“The condition causes people to avoid common，everyday situations and even other people for fear of being judged or criticized or embarrassing(使……尷尬)themselves．”

    Social anxiety disorder Can affect daily life and job performance．It also makes it very difficult for people to develop friends and romantic partnerships．

  “People with this disorder recognize their fear is unreasonable，”Ross noted．But they feel powerless to do anything about it．”

  The disorder also has physical symptoms(癥狀)，including heart palpitations(心悸)，feelings that their throat will close up，sweating，faintness，trembling．

  “Among people with the disorder,75 percent said the condition affected their ability to do normal activities．In addition，69 percent said they didn’t want people to think they were crazy，and 58 percent said they were embarrassed by their condition．”Ross said．

    “However, when the condition is diagnosed and treated，many reported improvement in their fives．In fact，59 percent who were receiving treatment said treatment had a positive effect on their ability to have a romantic relationship．In addition，39 percent who had received treatment said knowing that treatment can be successful aided their decision to get help. Ross noted．

45．People with social anxiety disorder are afraid of

A．being left alone    B．leading normal lives 49．The passage is mainly about

A．a(chǎn) way of preventing building from breaking down

B．a(chǎn) series'-of earthquakes in Haiti and Chile

C．a(chǎn) way of warning before buildings collapse

D．a(chǎn) newly—discovered structure of a molecule

46．The percentage of sufferers who worry that others may consider them mad is

    A．36％    B．69％   C．75％    D．59％

47．It can be learned from the last paragraph that

A．treatment of the disorder has no positive effect at all

B．sufferers’ condition is often hard to be diagnosed

C．treatment of the disorder helps many sufferers recover

D．a(chǎn)nxiety disorder sufferers often refuse medical treatment

48．The author writes this passage to

A．tell people not to be anxious about their social performance

B．a(chǎn)dvise social anxiety disorder sufferers to receive proper treatment

C．highly praise Jerilyn Ross’achievement in the social survey

D. introduce the findings of a social survey about social anxiety disorder

Don’t throw the picture away. Give it to Tony, he _____.

A. might have liked              B. might like it

C. may have liked it             D. would have liked it

It has been announced that candidates _____ remain in their seats until all the papers have been collected.

A. can     B. will    C. may    D. shall

It is _____ to observe the traffic rules.

A. of great importance for us B. important to us

C. great important of us D. of great importance to us

It is these poisonous products _____ can cause the symptoms of the flu, such as headaches and aching muscles.

A. who    B. that     C. how    D. what

--- What happened to you?

--- I was lost in the strange city; _______, it began to rain heavily.

A.    what’s worse                                      B.    to make matters worse

C.    having made matters worse                  D.    making matters worse

We want the case to be reopened even if there is the risk ______ it would concern football players.  A.       which      B.       what                     C.    when                     D.    that

When ______ different style of articles, we often pay attention only to the differences of their characteristics of language.

A.    compared              B.    being compared      C.    comparing      D.    having compared