为"发现"。故选A项。

　　18．A.concern B．respect

　　C．enthusiasm D．intelligence

　　解析：选C　根据上文所说，学习第二语言大有好处，因此设空处应表明对学习外语的热情(enthusiasm)。故选C项。concern意为"关心；涉及"；respect意为"尊敬"；intelligence意为"智力"。

　　19．A.involved B．impressed

　　C．competing D．replacing

　　解析：选A　be involved in为固定短语，意为"涉及；参加"。此处指参与到双语教学中的父母和老师。故选A项。impress意为"使......印象深刻"；compete意为"竞争"；replace意为"代替"。

　　20．A.opinions B．obstacles

　　C．senses D．attitudes

　　解析：选D　句意：......来自于同学的压力、说英语国家对其他语言的普遍态度、学校系统中的问题，应该对此负有责任。opinion意为"观点"；obstacle意为"障碍物"；sense意为"感官"。故选D项。

　　Ⅱ.语法填空

　　The Water­Splashing Festival (泼水节) is the most important traditional festival of the Dai minority in Yunnan Province and is Dai People's New Year. __1__ (it) origin goes back to more than seven hundred years ago. It's also a festival __2__ the largest participating population in Yunnan Province.

　　The festival takes place in mid­April and lasts three days. During the first two days, an outdoor market is set up, __3__ locals go for New Year shopping. It is also a great place to buy local souvenirs. In the afternoon, a dragon boat race __4__ (hold) on the Lancang River. At night, locals float river lanterns on the river, and the banks of the river are __5__ (colorful) lit. The practice is thought to drive bad luck away and bring good luck.

On the third day, the Dai People get dressed up and shoulder clean water to the Buddhist (佛教的) Temple. They first bathe the Buddha and then begin to splash water, __6__ (wish) each other good luck, __7__ (happy) and health. They believe the __8__ (wet) one gets, the more luck he/she receives, and the happier he/she will be. Tourists are also invited __9__ (join) in. You can splash anybody and everyone, __10__ he/she is a close neighbor, a fellow villager, or a complete stranger.