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【简答题】
某校九（2）班学生在一次活动课中，甲、乙、丙三个学习小组于同一时刻在阳 光下对校园中一些物体进行了测量，下面是他们通过测量得到的一些信息： 甲组：如图1，测得一根直立于平地，长为80cm的竹竿的影长为60cm， ：如图2，测得学校旗杆的影长为900 cm， 丙组：如图3，测得校园（灯罩视为球体，灯杆为圆柱体，其粗细忽略不计）的高度为200 cm，影长为156 cm. 请你根据以上信息，解答下列问题： 小题1:计算学校旗杆的高度. 小题2:如图3，设太阳光线NH与⊙O相切于点M，请根据甲、丙两组得到的信息，求灯罩的半径.（友情提示：如图3，的影长等于线段NG的影长，需要采用等式156 2 +208 2 =260 2 ）
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举一反三
【单选题】______are liabilities which are incurred, but for which payment is not yet made, during a given accounting period. Some examples in a manufacturing environment would be: wages, taxes, etc.
A.
Accumulated liabilities
B.
Unpaid debts
C.
Accrued liabilities
D.
Accounts payables
【单选题】What does the woman find out?
A.
Her payment has already been applied.
B.
Her payment was sent to the wrong office.
C.
She will receive a copy of the policy changes.
D.
She will receive credit towards her next payment.
【单选题】Young people today posting wonderful articles and beautiful photos onto the micro message to share with friends.
A.
are afraid of
B.
are used to
C.
used to
D.
would like
【单选题】In what ways are young people today unlikely to do the same as their parents according to Text A in Unit 3 ?
A.
Young people are now delaying marriage.
B.
Young people are now delaying child bearing.
C.
Young people are now delaying employment.
D.
All the above.
【单选题】Young people today are under ( ) pressure to succeed.
A.
tense
B.
intense
C.
intensive
D.
dense
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