C．grew D．formed

　　A　[词义猜测题。根据上下文我们可以推测，"传播；扩散"这个词义较符合该词在短文中的逻辑。]

　　3．Which of the following can we infer from this text?

　　A．Dengue hemorrhagic fever is more easily spread among humans.

　　B．Only two kinds of mosquitoes carry diseases in the world.

　　C．Dengue Fever outbreak is mainly found in Key West area in Hawaii.

　　D．The Asian Tiger mosquito is less easily discovered by humans.

　　D　[推理判断题。根据第二段最后一句的内容我们可以知道，亚洲虎蚊(Asian Tiger mosquito)在飞行的过程中，翅膀震动的速度很慢，产生的声音很小，因此不容易被人发现。]

　　4．From this text we know that ．

　　A．dengue vaccine makes the patient suffer from dengue hemorrhagic fever more easily

　　B．so far only one vaccine has been developed to cure Dengue Fever

　　C．a person who suffers from Dengue Fever harm his immune system

　　D．it is becoming more and more dangerous for humans to live in this world

　　A　[细节理解题。由本文的最后一句我们可以知道，如果感染了登革热，就非常容易感染登革出血热。]

　　B

　　"You're leaving again？"asked my daughter as she saw me packing my carry­on.

　　More than her words, it was her face that pierced (刺穿)my heart-I could see how crestfallen she was.

　　"It's only for two nights，"I explained.

　　But that didn't matter to her. It was just one more trip after barely being home for five days. I decided in that moment to travel less whenever possible and I managed to avoid flying altogether for most of the summer. As a result, it was a summer full of discoveries. I realized that my kids really were proud of me. In their time away from me they had learned lessons I couldn't have imagined.

Recently I began traveling a lot again. But this time it was different, mainly due