Because they are adjusting to their new bodies and a whole host of new intellectual and emotional challenges,teenagers are especially self‐conscious and need the（ ）that comes from achieving success and knowing that their accomplishments are admired by others.

单选题

( ) are bound morphemes because they can not be used as separate words.

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问答题

William Shakespeare‘s plays remain popular because they address themes and ideas that are still ﹍ to us.

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多选题

People who are （ ） in their work or other activities behave in a forceful way because they are very eager to succeed.

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单选题

--- Why do more and more people start to use new types of energy？--- Because they cost_____and are good for the environment.

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填空题

ar old, they could use as many as 50 signs. Garcia decided to try something new. He taught ASL to parents who were not deaf. The families started to teach signs to their infants when they were six or seven months old. ___3___ More and more parents took Garcia’s ASL classes. Like Ryan’s family, they were excited about signing with their babies. They wanted to give their babies a way to communicate before they could use spoken words. Some people worry about signing to babies. They are afraid

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