第二册第八单元-E
正确答案：other living things
正确答案：traffic
正确答案：serious
正确答案：life-threatening
正确答案：filter out
正确答案：radiation
正确答案：climates
正确答案：endangers
Part II Reading Comprehension ( 25 minutes )
Section A
Directions: In this section, there is a passage with several blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. You may not use any of the words in the bank more than once.
Then a strange blight 21 the area and everything began to change. Some evil spell had 22 the community: mysterious maladies 23 the flocks of chickens; the cattle and sheep sickened and died. Everywhere was a 24 of death. The farmers spoke of much illness among their families. In the town the doctors had become more and more 25 by new kinds of sickness appearing among their patients. There had been several sudden and 26 deaths not only among adults but even among children, who would be 27 suddenly while at play and die within a few hours.
There was a strange 28 . The birds, for example — where had they gone? Many people spoke of them, puzzled and disturbed. The feeding stations in the backyards were 29 . The few birds seen anywhere were moribund; they 30 violently and could not fly. It was a spring without voices.