单项选择题

In what way is food for space packed（）

A．Very small pieces of food are put on the floor.
B．Some of it is put into tubes.
C．Small-sized cookies are packed in plastic.
D．Both B and

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单项选择题

56（）

A．how
B．what
C．which
D．whether

单项选择题

Which statement is NOT true of the performer of acupuncture（）

A．He knows where to place the needles without pain.
B．He knows where the operation is to be performed.
C．He knows how to perform the operation to cure the patient.
D．He knows how to use the needles in an operation.