—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job
—（）my students have a try

单项选择题—What's the matter with you —After the long walk, my leg ______ and I couldn't go any further.

单项选择题Many people keep dogs as pets because dogs are regarded as（）friends to people.

A. lonely
B. only
C. loyal
D. fair

单项选择题Friendship helps us understand ______ we are, ______ we need each other and ______ we can do for each other.

单项选择题—Mum, it is nice weather. I want to skate this afternoon. —Don't you think the ice on the lake is too thin to ______ your weight

单项选择题One day Chuck is on a flight ______ the Pacific Ocean suddenly ______ his plane crashed.

单项选择题—What did Maria say —______

单项选择题小学英语语言技能二级目标关于听说的要求，除了要求能听懂常用指令并做出适当反应，以及能就所熟悉的个人和家庭情况进行简短对话等要求之外，还要求______。

单项选择题—I didn't see her yesterday. —Of course, you ______, because she had gone to a trip.

单项选择题创设情境既要接近学生生活，又要新颖离奇，还要简而易行。但最重要的一点是______。

单项选择题英语课程标准的评价体系要体现评价主体的多元化和评价形式的______。