英语部分专题练习(一)Part I Reading Comprehension Directions: There are 4 reading passages in this part
Each passage is followed by some questions or unfinished statements
For each of them there are four choices marked A
You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center
Questions 1 to 5 are based on the following passage:If the salinity of ocean water is analyzed, it is found to vary only slightly from place to place
Nevertheless, some of these small changes are important
There are three basic processes that cause a change in oceanic salinity
One of these is the subtraction of water from the ocean by means of evaporation—conversion of liquid water to water vapor
In this manner, the salinity is increa