B

(
B
)4.How long does a total solar eclipse usually last?
A.A few seconds. B.A few minutes. C.A few hours. D.A few days.
(
A
)5.What does the picture show?

A.A total solar eclipse.
B.A partial solar eclipse.
C.A total lunar eclipse.
D.A partial lunar eclipse.
(
C
)6.On which of the following websites can we most probably read the text?
A.www.f isu.com/s porter/
B.www.cook guide.com/en/catalog/
C.www.moon connection.com/sky/
D.www.science knowhow.com/inventions/