Question:  Read the passage carefully then choose the best answer (A, B, C or D).
Concern about the gypsy moth has been growing in Michigan. The moth larva, a two-inch long furry caterpillar, is a ravenous eater of tree leaves. These larve defoliate entire groups of trees, and through repeated defoliation, the trees eventually die. This type of tree loss is a major concern to the timber and paper industries, both of which depend on the well- being of Michigan’s woodlands. The  gypsy moth is also of  concern to recreational users of Michigan’s forests. Some areas are nearly unusable due to the large number of caterpillars that drop from the trees onto campsites, cabins, and trails.

To deal with this problem, the Michigan Forestry Department needed to assess to what extent the moth threatened timberlands. Before launching extensive pesticide spraying programmes, which present their own dangers to wildlife, a thorough understanding of the problem was needed. For this the department turned to john Whitter, a forest entomologist.

Whitter has been investigating the relation between tre species and the proliferation of the gypsymoth larvae. He has found that aspen and red and white oak trees are preferred food of the moth larvae: they rarely feed on re maple. Because of this, it is likely that northen Michigan forests will see a shift toward the red maple as oak and aspen are destroyed by the moth. Whitter’s research has further determined where tree death is caused by the gypsy moth are and where drought or other stresses may be the cause. With this information theForest Department is much better equipped to find a solution to the gypsy moth problem.
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1. According to the pasage, when do the gyspy moths do the most damage?
A. when  they are larvae                                B. when they attack caterpillars
C. after they are sprayed with pesticides        D. when  there is a drought

2. Which of the following if NOT true about gyspy moths?
A. They can bother tourists
B. They can bother wildlife
C. They can kill trees               
D. They can harm certain businesses

3. What problem with pesticide does the passage mention?
A. They are costly
B. They don’t kill all varieties of the gyspy moths.
C. They can be harmful to humans.
D. They may harm wild plants and animals

4. What did John Whitter do for the Forestry Department?
A. He developed new pesticides that won’t harm wildlife       
B. He found a solution to the gyspy moth problem.         
C. He studied the moths gyspy problem.
D. He recommended which pesticides to use.

5.  It can be inferred that before Whitter’s work, ………..
A. pesticides were more dangerous than rthey are now.
B.  people didn’t know whether drought or moths had killed certain trees.
C.  red maples were endangered by gyspy moths.
D. the gyspy moth population was controlled by periodic drought.