1.Having read the book,she will be able to pass on the(ac) k

1.Having read the book,she will be able to pass on the(ac) knowledge to her students.
2.More studies will be needed before we know what the roles of these genes (基因) are playing and whether they (re) to each other.
3.The country is famous for its rich(re) in oil and coal.
4.The drug will be useful to hundreds of thousands of(in) people.
5.In heavily areas,half the population has become blind.
6.The use of computers has increased(eff) many times and has enabled workers to do more tasks within the same amount of time.
7.Discuss pollution with your child,(em) how nice a clean street,lawn,or park looks.
8.It was reported that the(li) rate in this city was the highest in China; most of the people were able to read and write.
9.The government is(im) its program of helping the unemployed; many unemployed people have already reaped benefits from the program.
10.We must identify difficulties,examine them,and(con) them.Then we can make progress in our work or life.
11.Once you have had the disease,you are(imm) to it for the rest of your life,so you needn't worry about getting it again.
12.There are various methods for(dia) what is wrong with a sick person.
13.The teacher(ill) his lesson about France with many photographs of the people who live there.
14.He bought her what she wanted,(re) of the high expenses (Suggested first letter(s):re )
15.Alaska is the largest of the fifty states that(con) the USA.
16.Most people want to see new(fed) gun laws introduced.
17.Road conditions were supposed to be pretty bad,but we decided to(ri) taking the trip anyway.
18.According to some scientists,global warming (thr) the survival of the whole human race.
19.Many cancer victims can be(cu) if the disease is diagnosed early enough.
20.Such comments have (dis) attention from a long-awaited improvement in the economy.

还有还几个不会的,实在考虑不出来了.
1.accurate
2.resemble
3.resources
4.infected
5.你漏写东西了 (大概是heavily polluted areas)
6.efficiency
7.
8.literate
9.implementing
10.control
11.immune
12.diagnosing
13.illustrated
14.regardless
15.constitute
16.大概是 federal
17.risk
18.threatens
19.cured
20.distracted