--- Don’t waste any paper, because our forests ____ every day.

   ----Sorry, I didn’t know that.

   A. decreased    B. had decreased    C. have decreased    D. are decreasing

       If your mother wants to tell you something, she uses words. Birds cannot talk as we do. But some birds can make sounds to warn their young of danger. They have their own way to make the young birds do certain things.

       The jackdaw is a kind of blackbirds that lives in Europe. Jackdaws live together in flocks（群）.Young jackdaws do not know their enemies. When an older jackdaw sees a dog, it makes a loud rattling（格格響的）sound. The younger birds know this sound means an enemy is nearby. The sound warns them to know their enemies.

       If a young jackdaw is in a dangerous place, a jackdaw parent flies over him from behind. The parent bird flies low over the young bird’s back. The parent’s tail feathers（羽毛） move quickly from side to side. It is trying to say,“Follow me.”At the same time, the parent calls out,“Ｋey-aw,”key-aw.”The parent means,“Ｆly home with me.”The young bird then follows the older one home. Young jackdaws do not have to learn what certain sounds mean. They know the meaning of these sounds form the time they hatch（孵出）.

72．The jackdaw lives in       .

       A．Europe     B．Australia   C．America   D．Africa

73．Which of the following does this story lead you to believe?

       A．All animal parents can talk to their young.   

       B．Dogs are the most dangerous enemies for jackdaws.

       C．Young jackdaws know the meaning of their parents’ sound when they grow older.

       D．Some birds can give certain information to one another.

74．Parent jackdaw can use their tail feathers to       .

       A．a(chǎn)sk their young to follow them      B．play a game with the young

       C．tell the meal time            D．give a warning of a fire

75．This story tells much about       .

       A．the danger of jackdaws   

       B．ways in which mother can talk to their children

       C．the way jackdaws warn their young of danger

       D．how the jackdaw are living

76．When an old jackdaw sees a dog, it       .

       A．calls out,“Follow me.”       B．makes a loud sound

       C．flies away               D．fights the dog

Dorothy was always speaking highly of her role in the play,       of course, made the others unhappy.

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

Vitamin D helps our bodies make a special chemical，and this special chemical，

__________，affects our brains，making us feel happy.

   A. in turn            B. in particular         C. in advance    D. in short

My chest ___ when I take a deep breath, doctor.

A. hurts     B. wounds     C. harms     D. injures

These articles______ the problems of the modern world, including race relations and community development.

A. address                       B. avoid                            C. create                         D. correct

It’s        me why Alice gave up her job and got married．

A under             B．a(chǎn)bove           C．over             D beyond

The government has taken some measures to solve the shortage of electricity, but it may be some time _________ the situation improves.

         A. since                         B. when                  C. unless                           D. before

With the help of high technology in the past few years, electronic business ______  to bank industry and travel industry.

A. applied         B. have applied     C. had been applied       D. has been applied

It is raining heavily. Little Mary felt cold, so she stood ___ to her mother.

A. close    B. closely    C. closed     D. closing