组织教学仅仅是在上课开始时进行的。 （　）

柴油机的机体由（）组成。

A.气缸体

B.气缸盖

C.曲轴箱

D.活塞

饮用牛奶后，常引起肠胃不适、胀气、痉挛、腹泻等不良反应，主要原因是（）

A.淀粉酶缺乏或活性降低

B.乳糖酶缺乏或活性降低

C.麦芽糖酶缺乏或活性降低

D.凝乳酶缺乏或活性降低

Welcome to Banff, Canada’s first, most famous and arguably most fascinating national park. If you’ve come to ski or snowboard, we’ll see you on the slopes. Skiing is a local favourite too.

While you’re here, try other recreational activities available in our mountains. Popular choices include a Banff Gondola ride up Sulphur Mountain, bathe in the natural mineral waters at the Upper Hot Spring, horse-drawn sleigh ride, drive-your-own-team dog sled excursion, and snowmobile tour to the highland（but not in the national park）.

We also recommend you make time to enjoy simple pleasures. After looking around Banff Ave shops, walk a couple of blocks west or south to the scenic Bow River.

True ice skating on frozen Lake Louise where Ice Magic International Ice Sculpture Competition Works are displayed after Jan 25. You can rent skates in Banff or at the sport shop in the Fairmont Chateau Lake Louise hotel.

Banff’s backcountry paths access a wilderness world of silence and matchless beauty—cross country skis and snowshoes provide the means. Banff sport shops rent equipment and clothes, or join an organized tour. Although we’ve been many times, we still find the cliffs and icefalls of our frozen canyons worth visiting.

Wildlife watching also creates satisfying memories. We have seen hundreds of the elk and bighorn sheep that attract visitors, yet they still arouse a sense of wonder. And the rare spotting of a cougar, wolf or woodland caribou takes our breath away.

See if simple pleasure work for your Fight in the snow with your kids, walk beside a stream or climb to a high place and admire the view.

—Banff Resort Guide Editors

小题1:According to the passage, Banff’s backcountry is accessible by_______.

A. cross country skiing             B, horse-drawn sleigh riding

C. snowmobiling                   D. dogsledding

小题2:Which of the following is true according to the passage?

A．Dogsledding is the most popular sport among local people.

B．Watching wildlife is a memorable experience.

C．Travelers should bring their own sports equipment.

D．Shopping is too simple a pleasure to enjoy.小题3:The purpose of the writing is to _______.

A．promote scenic spots in Canada

B．advertise for the sports in Banff

C．introduce tourist activities in Banff

D．describe breathtaking views in Banff

有关撒哈拉以南非洲物产资源的表述，正确的是 [ ]

A、几内亚是世界上铜矿出产量最多的国家

B、南非是世界上生产金刚石最多的国家

C、赞比亚的铝土矿出产量占世界第一位

D、本区重要的石油输出国为尼日利亚

2010年3月6日，在政协经济组讨论会上，当王超斌委员就大学生就业问题建议取消户口限制、国家为应届大学毕业生提供住房时，会场上响起了“我反对”的声音……这样一个情境，从一个侧面折射出（）。

①人民民主是社会主义的生命

②社会主义民主政治充满活力

③人民政协是社会民主的最高形式

④国家机构坚持民主集中制的组织和活动原则

A.①②

B.③④

C.①②③

D.①②③④