Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A, B, C and D. You should choose the one that best fits into the passage. Then mark the corresponding answer on ANSWER SHEET.
In the People¡¯s Republic of China the odd pre-quake behavior of horses and other animalsª©__36__successfully to warn people that earthquakes__37___. Recently, a group of American geologists and geophysicists visited China and listened with great interest__38__ scientists there who explained how they have been able to predict many earthquakes in the past three years. The American scientists compared theª©___39__ with the unique Chinese program__40 __the impact of Chinese acupuncture ___41___ Western medicine.ª¥
The Chinese scientist use ___42 __ but they also monitor strange signals such as various ground noises, the fluctuation of well-water levels, and the strange behavior of animals. The results are quite interesting. Chinese seismologists, for example, ___43 __ predicted two magnitude 6.9 quakes near the China-Burma border on May 29, 1976. The seismologists _ 44 __ that their predictions have been so precise that they were able to evacuate many of their people before an earthquake occurred, thus __45__thousands of lives.
ª© __46___ , the Chinese experts also admit that there have been some false alarms. American scientists__47___ stories of unusual pre-quake animal behavior before, but they ___48___ them too seriously until their recent visit to China. ¡°Maybe there¡¯s something to it.¡± said Jack Everndon, a California scientist. ¡°We need some kind of short-term warning. We need something.¡±ª¥
He didn¡¯t mention the kind of research he may be considering, ¡°Some of us
are thinking it¡¯s __49___ enough to give it a serious look,¡± he commented. ¡°Two years ago we ___50__ that.¡±ª¤