教学工作的中心环节是( )。

多项选择题国家在受教育者中，进行( )的教育，进行理想、道德、纪律、法制、国防和民族团结的教育。

多项选择题为保护未成年人的身心健康，促进义务教育的实施，维护未成年人的合法权益，根据( )制定了《禁止使用童工规定》。

单项选择题This passage suggests that an individual’s IQ （）.

A．can be predicted at birth
B．stays the same throughout his life
C．can be increased by education
D．is determined by his childhood

单项选择题The case of the twins appears to support the conclusion that （）.

A．individual with identical brains seldom test at same level
B．an individual’s intelligence is determined only by his environment
C．lack of opportunity blocks the growth of intelligence
D．changes of environment produce changes in the structure of the brain

单项选择题According to the passage, the average IQ is （）.

A．85
B．100
C．110
D．125

单项选择题The best statement of the main idea of this passage is that （）.

A．human brains differ considerably
B．the brain a person is born with is important in determining his intelligence
C．environment is crucial in determining a person’s intelligence
D．persons having identical brains will have roughly the same intelligence

单项选择题This selection can best be titled （）.

A．Measuring Your Intelligence.
B．Intelligence and Environment.
C．The Case of Peter and Mark.
D．How the Brain Influences Intelligenc

单项选择题From the letters we’ve learned that it’s very （）to know something about American social customs.

A．difficult
B．friendly
C．enjoyable
D．helpful

单项选择题Which of the following is NOT proper for joining in a dinner party（）

A．Get there 15 minutes earlier.
B．Make yourself at home.
C．Follow others to use forks and knives.
D．Thank your friends for the meal.

单项选择题If you’re asked to a dinner party but not sure about what to bring as a present, it’s good to bring（）

A．some fruits
B．a bottle of wine
C．sonic flowers
D．a knife and fork