—I am very ____ tomorrow's Math test . I am afraid I can't pass this time.
—Cheer up! I'm sure you'll make it.
A：worry
B：worry about
C：worried about
D：worried
2015年暑假，小明和家人一起到拉萨旅游，下面是他对当时景观的描述，不可信的是（ ）
—It's about 5 flight.
0.074×0.15=____
0.9÷0.75=____
