题目内容

The investigation and utilization are very important to protect environment and to energy.

A. economize
B. propagate
C. allege
D. correlation

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It was that the restaurant discriminated against black customers.

A. alleged
B. consolidated
C. segregated
D. depleted

Many institutions exchange information by hand because of computer systems.

A. incompitable
B. intelligible
C. reversible
D. ecological

We have to between politics and education.

A. differenciate
B. intelligible
C. deplete
D. maneuver

Policemen order in the streets.

A. preserve
B. allege
C. differenciate
D. eradicate

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