问题
选择题
What Lucy and Lily now? [ ]
A. is; doing
B. are; doing
C. does ; do
D. do; doing
答案
答案：B
搜题请搜索小程序“爱下问搜题”
What Lucy and Lily now? [ ]
A. is; doing
B. are; doing
C. does ; do
D. do; doing
答案：B
| Seeking to build support among black families for its education reform law, the Bush administration paid a prominent black pundit $240,000 to promote the law on his nationally syndicated television show and to urge other black journalists to do the same. The campaign, part of an effort to promote No Child Left Behind (NCLB), required commentator Armp Williams "to regularly comment on NCLB during the course of his broadcasts," and to interview Education Secretary Rod Paige for TV and radio spots that were aired during the show in 2004. Williams said Thursday he understands that critics could find the arrangement unethical,but "I wanted to do it because it’s something I believe in." The top Democrat on the House Education Committee, Rep. George Miller of California, called the contract "a very questionable use of taxpayers’ money" that is "probably illegal". The contract, detailed in documents obtained by USA TODAY through a Freedom of Information Act request, also shows that the Education Department, through the Ketchum public relations firm, arranged with Williams to use contacts with America’s Black Forum, a group of black broadcast journalists, "to encourage the producers to periodically address" NCLB. He persuaded radio and TV personality Steve Harvey to invite Paige onto his show twice. Harvey’s manager, Rushion McDonald, confirmed the appearances. |
The reason that this story was made known to the public was the fact that______.
A．USA TODAY requested Freedom of Information Act to act on its behalf
B．Freedom of Information Act requested USA TODAY to act on its behalf
C．USA TODAY managed to obtain copies of the documents that contained the contract
D．Freedom of Information Act so stated that USA TODAY was able to obtain the documents
Q、R、T、X、Y、Z是六种原子序数依次增大的前四周期常见元素，其相关信息如下表：
| 元素 | 相关信息 |
| Q | Q的单质是实验室常用的惰性电极材料 |
| R | R原子基态时2p原子轨道上有3个未成对电子 |
| T | 负二价的元素T的氢化物在通常状况下是一种液体，且其中T的质量分数为88.9% |
| X | X是第三周期电负性最大的元素 |
| Y | 元素Y位于周期表的第10列 |
| Z | Z存在质量数为65，中子数为36的核素 |
（1）Z元素的原子基态时的电子排布式是________。
（2）下列叙述正确的是________（填字母序号）。
a．Q的气态氢化物比R的气态氢化物稳定
b．Q的含氧酸一定比R的含氧酸酸性强
c．R的气态氢化物的熔点在同族元素的氢化物中最低
d．R的第一电离能、电负性都比Q的大
（3）Q和T可形成两种常见化合物，分别表示为QT和QT2。QT分子中σ键和π键的个数比为________；QT2分子中，Q原子采取________杂化。
（4）笑气（R2T）是一种麻醉剂，有关理论认为R2T与QT2分子具有相似的结构。故R2T的空间构型是________，其为________（填“极性”或“非极性”）分子。
（5）含有Q、Y和镁三种元素的某种晶体具有超导性，其结构如图所示。则该晶体的化学式为________；晶体中每个镁原子周围距离相等且最近的Y原子有______个。
