prep软件里面4条不会的小题

smile_lt

1。数学：Before being simplified, the instructions for computing income tax in Country R were to add 2% of one's annual income to the average of 100 units of Country R's currency and 1% of one's annual income. Which of the following represents the simplified formula for computing the income tax, in Country R's currency, for a person in that country whose annual income is I?
A. 50 + I/200
B. 50+3I/100
C. 50+I/40
D. 100+I/50
E. 100+3I/100

2。语法：『less than 35 years after the release of African honeybees outside SP, Brazil,』their descendants, popularly known as killer bees, had migrated as far north as southern Texas.

A. Less than 35 years after the release of African honeybees outside SP, Brazil,
C. In less than 35 years since African honeybees had been released outside SP, Brazil,

3。语法：『Like any star fo similar mass would do, once the Sun has exhausted the hydrogen in its core, it expands into a red giant, eventually ejecting』its outer envelope of gases to become a white dwarf.

C.  As in the case of any star of similar mass, once the hydrogen in the Sun's core is exhausted, it will expand into a red giant, and eventually ejecting
D.  As any star of similar mass would, once the hydrogen in the Sun's core is exhausted it will expand into a red giant and will eventually eject
E.  As would be the case with any star of similar mass, once the Sun exhauses the hydrogen in its core, it will expand into a red giant and eventually eject

4。语法：The empire of P reached the Indus Valley in the fifth century B.C, bringing『the Aramaic script with it, from which was derived both northern and』sounthern Indian alphabets.

A. the Aramaic script with it, from which was derived both northern and
C. with it the Aramaic script, from which derive both the northern and the
D.with it the Aramaic script, from which derive both northern and

答案依次为C,A,E,C.

thanx！

myra0308

第一道数学，题目意思应该是2%I+[(100+1%I)/2]