Which of the following can be inferred from the passage?
A.eyes have developed differently in each species
B.bees have the most complex eye
C.humans should not envy what they don’t need
D.perfect vision is not perfect

The students were told to __________.
A.talk all they wanted     
B.make lots of expressions
C.speak freely 
D.talk with their minds open

There isn‘t enough space in the room for another bed.
A.Not enough space there is in the room for another bed.
B.Another bed will take up enough space in the room.
C.We don't want any more beds in the room.
D.The room isn't big enough for one more bed.

Choose a, b, c, or d that best completes each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
After all, she _______ him since her childhood.
A.knows                                 
B.knew                      
C.was knowing                      
D.had known

Read the passage and choose the best option to complete each blank.
            Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes ____46___ ecosystems. If there is too little rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals____47___feed on it may also die or move away.  Some changes are good for ecosystems. Some pine forests need fires for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds ____48___. Polluting the air, soil, and water can harm ecosystems. Building dams on rivers for electric power and irrigation can harm ecosystems ____49___ the rivers. Bulldozing wetlands and cutting down forests destroy ecosystems. Ecologists are working with companies and governments to find better ways of ___50____ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people without causing harm to ecosystems.
___49___
A.on               
B.around  
C.over       
D.under

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
In some families, younger people seem more _______  to save money than their parents.
A.supposed
B.objected
C.suspected
D.inclined

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
We’re still hesitating about which school our son ought to go to.
A. We had great difficulty deciding upon which school our son should attend.
B.We haven’t yet decided where we should send our son to school.
C. We are not sure whether we should let our son choose a school for himself.
D.We won’t send our son to any school unless we are certain that it is the one we want.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
______, others use them in medicine.
A.While some scientists use lasers for military purposes 
B.Used for military purposes by some scientists
C.Lasers are used for military purposes by some scientists
D.Some scientists’ using lasers for military purposes

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
John's ______ and efficiency at the company led to his promotion to Sales Manager.
A.punctuality  
B.punctual 
C.punctuate   
D.punctually

A.while 
B. why 
C.whose  
D.where