Extinct(5次)
1. If nothing is done to protect the environment, millions of species that are alivetoday will have become ________ .(01/1)
A) deterioratedB) degeneratedC) suppressedD) extinct

2. Sadly, the Giant Panda is one of the many species now in danger of_______.(00/1)
A) extinctionB) migrationC) destructionD) extraction

3. Certain species disappeared or became ______ as new forms arose that were better adaptedto the Earth's changing environment. (99/6)
A) feeble B) extinctC) massiveD) extinguished

4. Diamonds have little ______ value and their price depends almost entirely on their scarcity. (99/1)
A) extinctB) permanentC) surplusD) intrinsic

5. In general, matters which lie entirely within state borders are the______ concern of state governments. (97/1)
A) extinctB) excludingC) excessive D) exclusive　

Originate(4次)
1. The design of this auditorium shows a great deal of _____. We have never seen such a building before. (03/6)
A) inventionB) illusionC) originalityD) orientation　

2. The person who _______ this type of approach for doing research deserves our praise. (02/12)
A) originatedB) speculatedC) generatedD) manufactured

3. The Space Age ______ in October 1957 when the first artificial satellite was launched by the Soviet Union. (99/1)
A) initiatedB) originatedC) embarkedD) commenced

4. This is the ______ piano on which the composer created some of his greatest works. (98/1)
A) trueB) originalC) realD) genuine　

Inherent(3次)
1. It took a lot of imagination to come up with such a(n) ________ plan. (05/1)
A) inherentB) ingeniousC) vigorousD) exotic

2. Diamonds have little ____ value and their price depends almost entirely on their scarcity. (03/6)
A) intrinsicB) eternalC) subtleD) inherent　

3. Being impatient is ________ with being a good teacher. (01/6)
A)intrinsicB)ingeniousC)incompatibleD)inherent

Inject(3次)
1. The doctors ________ the newly approved drug into the patient when he was critically ill. (05/1)
A) injectedB) ejectedC) projectedD) subjected

2. Scientists are pushing known technologies to their limits in an attempt to ____more energy from the earth. (03/9)
A) extractB) injectC) dischargeD) drain

3. Many types of rock are _______ from volcanoes as solid, fragmentary material. (02/12)
A) flungB) propelledC) ejectedD) injected　

Haunt(2次)
1. Years after the accident he was still ________ by images of death and destruction. (04/6)
A) twistedB) dippedC) hauntedD) submerged

2. As the trial went on, the story behind the murder slowly ____ itself. (03/6)
A) convictedB) releasedC) hauntedD) unfolded　

Hospitality(2次)
1. Giving a gift can convey a wealth of meaning about your appreciation of their ____ and the importance you place upon the relationship. (02/6)
A) solidarityB) priorityC) superiorityD) hospitality

2. I was deeply impressed by the hostess' ______ and enjoyed the dinner party very much. (99/6)
A) hostilityB) indignationC) hospitalityD) humanity