問１　The decline of wolves in Yellowstone National Park in the early 1900s resulted in (　　) .

1 　a decrease in the number of hunters, which was good for the wolves

2 　a decrease in the number of ranchers, which reduced the human population

3 　an increase in the number of elk, which damaged the local ecosystem

4 　an increase in the number of trees and plants, which helped elk to hide

問 2　Out of the following four graphs, which illustrates the situation the best?

問 3　According to the article, which two of the following tell us about the current situation in the park?

（Choose two options. The order does not matter.）

1 　More travelers are visiting the park than thirty years ago.

2 　One species was saved but another has become extinct instead.

3 　People have started hunting wolves around this area again.

4 　The park has both wolves and elk, as well as rich vegetation.

5 　There is a new rule to reduce the elk population in the park.

問 4　The best title for this article is (　　) .

1 　A Decrease in the Number of Ranchers’ Animals

2 　Addressing Problems With Nature’s Balance

3 　Nature Conservation Around the World

4 　Releasing Elk in National Parks

正答　問１：３　問２：２　問３：３，４　問４：２

平成30年度試行調査　英語リーディング　第６問Ｂ