——
16. The physicist used so many new terms in his lecture that the students could not take ______ what he was
saying.
A. in B away C. to D. over
17. One of the requirements for producing vapor is that the water ______ to its boiling point.
A. must be heated B. has to be heated C. is to be heated D. be heated 18. Iran is one of the word’s leading _______ oil expert countries.
A. raw B. crude C. rough D. primitive
19. According to Aristotle’s theory, everything is made out of four ______: earth, air, fire, and water.
A. factors B. portions C. sources D. elements
20. The article strongly argues for the need to ______ students’ ability in higher education.
A. form B. shape C. cultivate D. present 21. Rather than ______ money in such a dishonest way, Jack would beg in the street.
A. get B. got C. getting D. to get
22. In the long run, the search for sale and _____ ways of generating electricity should be continued.
A. economy B. economics C. economical D. economic 23. To our disappointment, very few lambs ____ the severe winter last winter.
A. survived B. endured C. spent D. remained alive 24. Every bush and every flower ________ to be cut down.
A. are B. are going C. will go D. is
25. The witness’ statement about the crime is very ______, so the criminal might be in control in no time.
A. specific B. special C. unusual D. different 26. It’s important to locate industries in area where rich raw materials are _____