may be obtained from vitamin and minerals
are being sought by scientists
can be gotten from soybeans
can be found in iodized salt
第1题:
It can be inferred from the last paragraph that outside directors______.
A.may stay for the attractive offers from the firm
B.have often had records of wrongdoings in the firm
C.are accustomed to stress-free work in the firm
D.will decline incentives from the firm
第2题:
The best estimate of the wind direction at sea level can be obtained from observing the direction of the ______.
A.cloud movement
B.vessel heading
C.waves
D.swells
第3题:
From the last paragraph we can learn that __
A. some pipes have to be re-arranged in winter
B. the system can do more than warming up the building
C. the exchangers will pick up heat from the street surface
D. less heat may be collected in winter than in summer
第4题:
第5题:
第6题:
The Admiralty Notices to Mariners can be obtained ______ by Masters of vessels from any Admiralty Chart Agent.
A.free of charge
B.with no responsibility
C.without limitations of distribution
D.with little charges
第7题:
第8题:
Our tradition ______ be different _____ yours.
A、can;with
B、must;with
C、need;as
D、may;from
第9题:
第10题: