What is true about the Moon’s gravitational force ? 
A.It pulls water on the far side of the Earth more strongly.
B.It is more than twice as powerful as that of the Sun.
C.It has reduced gravity when it is lined up with the Sun and the Earth.
D.Its force is strongest when it is located at 90 degrees to the Earth.

According to paragraph 3 , it is true that
A.Neap tides are characterized by lower water during the low tide period.
B.Spring tides occur when the Moon is in first and the third quarter.
C.The Sun has more gravitational force than the Moon because of it larger size.
D.The range of tide is greater in spring tides than in ordinary tides.

The word imperceptible in the last paragraph could best be replace by
A.not noticeable
B.difficult to explain
C.not generally
D.not able to be said

What can be  inferred about Canada’s Bay of Fundy ?
A.It may experience tsunamis because of its extreme tides.
B.It may have a longer tide cycle because of its wide variations.
C.It may be very narrow because it has wide tidal variations.
D.It may be influenced more by gravity than other places.

The word it in paragraph 2 refers to
A.height
B.the high water
C.the low water
D.the range of tide

Mark the letter A, B, C or D to show the underlined part that needs correction.
She was furious that she was made fun from.
A.furious
B.that
C.was
D.from

A Korean model is ____ if you’re looking for a family car.
A.the easily more economical choice
B.quite the more economical choice
C.much more economically
D.by far the most economical choice

Does anyone recognize the girl with a ……….of flowers in her hand?
A.range
B.pack
C.heap
D.bunch

Margaret was ____ to learn that her students had done so well in their exams.
A.typified
B.gratified
C.clarified
D.diversified

As a partner I accept full responsibility but by the same ......................... I feel others should too.
A.sign
B.reference
C.token
D.meaning