27. The glass vessels should be handled most carefully since they are _______.
A) intricate C) subtle
B) fragile D) crisp
28. Hill slopes are cleared of forests to make way for crops, but this only _______ the crisis.
A) accelerates C) ascends
B) prevails D) precedes
29. He blew out the candle and _______ his way to the door.
A) converged C) strove
B) groped D) wrenched
30. Often such arguments have the effect of _______ rather than clarifying the issues involved.
A) obscuring C) tackling
B) prejudicing D) blocking
27. B 28. A 29. B 30. A
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