气流传播而分布均匀的病害取样方法是（）。 A.“Z”字形取样 B.五点式取样 C.平

Every evening after dinner，if not ________ from work，I will spend some time walking my dog.

A．being tired

B．tiring

C．tired

D．to be tired

2011年4月20日，随着十一届全国人大常委会第二十次会议审议个人所得税法修正案草案，个税调整草案正式亮相：工资薪金费用扣除额（“免征额”）由现行的每月2000元提高到3000元。原来9级税级减少到7级。由图可知，此次个人所得税调整（   ）

①有利于保护中低收入阶层利益   ②可以合理调节个人收入分配 

③有利于适度增加国家财政收入   ④是实现社会公平的主要手段

A．②③

B．②④

C．①④

D．①②

Phyllis Wheatley is regarded as America’s first black poet. She was born in Senegal, Africa, about 1753 and brought to America aboard a slave ship at about the age of seven. John and Susannah Wheatley bought her for three pounds at a slave auction in Boston in 1761 to be a personal servant of Mrs. Wheatley. The family had three other slaves, and all were treated with respect. Phyllis was soon accepted as one of the family, which included being raised and educated with the Wheatley’s twin 15-year-old children, Mary and Nathaniel. At that time, most females, even from better families, could not read and write, but Mary was probably one of the best educated young women in Boston. Mary wanted to become a teacher, and in fact, it was Mary who decided to take charge of Phyllis’s education. Phyllis soon displayed her remarkable talents. At the age of twelve she was reading the Greek and Latin classics and passages from the Bible. And eventually, Mrs. Wheatley decided Phyllis should become a Christian.
At the age of thirteen Phyllis wrote her first poem. She became a Boston sensation after she wrote a poem on the death of the evangelical preacher George Whitfield in 1770. It became common practice in Boston to have" Mrs. Wheatley’s Phyllis" read poetry in polite society. Mary married in 1771, and Phyllis later moved to the country because of poor health, as a teacher and caretaker to a farmer’s three children. Mary had tried to interest publishers in Phyllis’s poems but once they heard she was a Negro they weren’t interested.
Then in 1773 Phyllis went with Nathaniel, who was now a businessman, to London. It was thought that a sea voyage might improve her health. Thirty-nine of her poems were published in London as Poems on Various Subjects, Religious and Moral. It was the first book published by a black American. In 1775 Phyllis wrote a poem extolling the accomplishments of George Washington and sent it to him. He responded by praising her talents and inviting her to visit his headquarters. After both of her benefactors died in 1777, and Mary died in 1778, Phyllis was freed as a slave. She married in 1778, moved away from Boston, and had three children. But after the unhappy marriage, she moved back to Boston, and died in poverty at the age of thirty.

Which of the following conclusions about Phyllis is supported by the passage

A．She would have been more recognized as a poet if she had not been black.

B．She would have written poetry if she had stayed in Africa.

C．She went unrecognized as a poet during her lifetime.

D．She only wrote religious poetry.

以下程序运行后的输出结果是 【12】 。
mam()

char a[]="123456789",*p；
int i=0；
p=a；
while(*p)

if(i%2＝0)
*p=’*’；
p++；i++；

puts(A) ；

公差带的参数由形位公差带的（）、（）、（）和（）四个参数组成。