单项选择题

A．For hunting.B．For protecting himself.C．For stimulatio……

A．For hunting.
B．For protecting himself.
C．For stimulation.
D．For protecting the country.

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单项选择题A．It’s near Mexico City.B．It’s in Guatemala.C．It’s stretched from the plains of central Mexico to the mountains of Guatemala.D．It’s in America.

A．It’s near Mexico City.
B．It’s in Guatemala.
C．It’s stretched from the plains of central Mexico to the mountains of Guatemala.
D．It’s in America.

单项选择题A．Same height.B．Same friends.C．Same number of children.D．Same university.

A．Same height.
B．Same friends.
C．Same number of children.
D．Same university.

单项选择题A．Commenting on a picture.B．Looking at some paintC．Painting a picture.D．Comparing two paintings.

A．Commenting on a picture.
B．Looking at some paint
C．Painting a picture.
D．Comparing two paintings.

填空题Calcium - rich food ______ its supplements because it also provides other nutrients like vitamin D and other minerals.

填空题Calcium permits cells to divide, regulates muscle contraction and relaxation, and plays an important role in the movement of protein and nutrients inside cells besides helping ______ .