Most vaccines are given（）.
A.by mouth
B.by injections
C.with nose spray
D.intravenously
正确答案：by injections
Most vaccines are given（）.
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Insulin is used for the treatment of（）.
The insulin injection sites must be rotated in order to prevent erosion of the fat beneath the skin.
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- Vaccines given during childhood is generally（）.
- Most vaccines contain a little bit of a disease germ that is（）.
- Most vaccines contain a little bit of the type of germ that makes you sick.
- Vaccines can guarantee complete protection from a disease.
- Sometimes vaccines are combined to protect you from several diseases with one shot.