Many people are（）to insect bites, and some even have to go to hospital.

单项选择题In the present economic（）we can make even greater progress than previously.

A. air
B. mood
C. area
D. climate

单项选择题The plane found the spot and hovered close enough to（）that it was a car.

A. ensure
B. examine
C. verify
D. testify