16．
Charles sat in the cafeteria with five other students，waiting for Ms．Swanson to interview all of them．Ms．Swanson，the seventh-grade science teacher，was looking for a lab helper．Charles's palms were sweaty and his face felt hot．He wondered if his face was red-and if anyone would notice．
As he prepared for his interview，Charles reviewed a set of index cards（索引卡）with notes that he had made earlier．On each card，he had written an answer to a question that Ms．Swanson might ask．"The emergency eyewash station is not a place to get a drink of water，"he quietly read aloud from one card．
Charles decided to check out the other candidates．Nearby，a girl with dark red hair was shuffling （洗牌） her own set of index cards．He watched as she tore a card into tiny pieces and put the pieces into a pocket．Suddenly she looked up at Charles．"Are you nervous？"she asked．
"No，I'm not nervous-not at all，"Charles stammered．"What about you？"
"Uh，no，me neither，"the girl responded．
At that moment，Ms．Swanson appeared．"Charles Locke？"she called out．
69．The passage is mainly aboutA．
A．waiting to be interviewed
B．working as a science teacher
C．making notes on index cards
D．training to be a lab helper
70．You can tell that the girl was nervous becauseB．
A．her face turned red
B．she tore up one of her index cards
C．she kept looking at Charles
D．she read her index cards aloud
71．What is most likely to happen next in the story？A
A．Charles will talk to Ms．Swanson．
B．Charles will tear up his index cards．
C．Charles will help the girl．
D．Charles will decide not to try for the work．
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