分部积分法、求大神做例题… 大一高数

Which of the following sentences does NOT contain an attributive clause？

A．It is said that the U. S. government had made public a survey that is about human rights.

B．Those who do not keep their promise can be regarded as promise-breakers.

C．My father"s words, which are heartfelt and sincere, touch my heart.

D．She asked the reason why there was a delay.

请帮忙给出正确答案和分析，谢谢！

语言主要通过什么影响人们的健康

A、生活环境

B、劳动条件

C、心理

D、精神生活

E、生活方式

请帮忙给出正确答案和分析，谢谢！

下列有关局部兴奋的叙述，正确的是

A、随刺激的增大而减少

B、可由产生部位向周围形成衰减性扩布

C、不表现不应期

D、能引起时间性和空间性总和

E、终板电位不属于局部兴奋

请帮忙给出正确答案和分析，谢谢！

According to the news, which statement is CORRECT？

A．Americans also use pumpkins for cooking during the holiday of Thanksgiving.

B．Americans have grown pumpkins in south America for hundreds of years.

C．Pumpkins will grow even if the female flower is not pollinated at the right time.

D．People only use pumpkins in pies, bread and cakes.

请帮忙给出正确答案和分析，谢谢！

烟叶烘烤与烟叶等级质量的关系()导致烟叶光泽灰暗。

A.定色期期湿球温度过低或不稳定;

B.干筋期湿球温度过低;

C.定色前温度过高,排湿不畅;

D.筋期干球温度和湿球温度过高;

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！