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【简答题】
已知定义域为R的函数y=f（x）和y=g（x），它们分别满足条件：对任意a，b∈R，f（a+b）=f（a）+f（b）；对任意a，b∈R，g（a+b）=g（a）?g（b），且对任意x＞0，g（x）＞1． （1）求f（0）、g（0）的值； （2）证明函数y=f（x）是奇函数； （3）证明x＜0时，0＜g（x）＜1，且函数y=g（x）在R上是增函数； （4）试各举出一个符合函数y=f（x）和y=g（x）的实例．
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【简答题】Children are____to meet with setbacks (挫折) as they grow up,so their parents don’t have to worry about it. A．possible B．due C．necessary D．bound
【单选题】Children are in need of adoption because some birth parents are unable to meet adequately the needs of their child. There are numerous reasons for making an adoption plan. Birth parents may feel they ...
A.
supportive
B.
doubtful
C.
negative
D.
indifferent
【单选题】Children are ________ to meet with challenges as they grow up so parents don't have to worry about it.
A.
possible
B.
due
C.
probable
D.
bound
【单选题】Children are ____ to meet with setbacks as they grow up, so their parents don’t have to worry about it．
A.
possible
B.
due
C.
necessary
D.
bound
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