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Reading the Text. U.S. Customs and Border Protection U.S. Customs and Border Protection is responsible for protecting the United States against the illegal importation of prohibited items. CBP officers have the authority to question you and to examine you and your personal property. If you are one of the travelers selected for an examination, you will be treated6 in a courteous, professional, and dignified manner. CBP Supervisors and Passenger Service Representatives are available to answer your questions. Comment cards are available to compliment or provide feedback. Important Information: U.S. Residents — Declare all articles that you have acquired abroad and are bringing into the United States. Visitors (Non-Residents) — Declare the value of all articles that will remain in the United States. Declare all articles on this declaration form and show the value in U.S. dollars. For gifts, please indicate the retail value. Duty-CBP officers will determine duty. U.S. residents are normally entitled to a duty-free exemption of $800 on items accompanying them. Visitors (non-residents) are normally entitled to an exemption of $100. Duty will be assessed at the current rate on the first $1,000 above the exemption. Agricultural and Wildlife Products — To prevent the entry of dangerous agricultural pests and prohibited wildlife, the following are restricted: Fruits, vegetables, plants, plant products, soil, meat, meat products, birds, snails, and other live animals or animal products. Failure to declare such items to a Customs and Border Protection Officer/Customs and Border Protection Agriculture Specialist/Fish and Wildlife Inspector can result in penalties and the items may be subject to seizure. Controlled substances, obscene articles, and toxic substances are generally prohibited entry. Thank you, and welcome to the United States.
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举一反三
【单选题】下列各组词语中,画横线字的读音完全相同的一组是( )。
A.
宁静 宁愿 息事宁人 宁死不屈
B.
哄弄 哄抢 哄堂大笑 一哄而散
C.
蔓延 蔓草 不蔓不枝 顺蔓摸瓜
D.
脉搏 山脉 脉络分明 一脉相承
【单选题】已知 K SP Ө (Ag 3 PO 4 )=8.7×10 -17 , 其在水中的溶解度 S 为
A.
9.7×10 -5 mol·L -1
B.
4.2×10 -5 mol·L -1
C.
1.3×10 -4 mol·L -1
D.
7.3×10 -5 mol·L -1
【单选题】已知 K sp Ө (AgCl)=1.77×10 -10 ,AgCl在0.01mol·L -1 NaCl溶液中的溶解度为( )mol·L -1 。
A.
1.77×10 -10
B.
1.33×10 -5
C.
0.001
D.
1.77×10 -8
【单选题】已知 K sp Ө (Ag 2 S)= 1.6×10 -49 K sP Ө (Ag 2 CrO 4 )= 9×10 -12 Ag 2 CrO 4 固体加到 Na 2 S 溶液中 , 大部分 Ag 2 CrO 4 转化为 Ag 2 S, 其原因是
A.
S 2- 的半径比 CrO 4 2- 的半径小
B.
K sp Ө (Ag 2 S) 远小于 K SP Ө (Ag 2 CrO 4 )
C.
Ag 2 CrO 4 溶解度比 Ag 2 S 小
D.
CrO 4 2- 的氧化性比 S 2- 强
【单选题】下列词语中加下划线的字的读音完全相同的一组是
A.
讪 笑 单 田芳     餐厅用 膳 赡 养父母
B.
瘪 三 憋 闷     翁中捉 鳖 蹩 痛了脚
C.
濒 危 殡 葬 鬓 发苍白 摈 而不用
D.
擘 画 泊 位    安亳 徽 州 薄 物细故
【单选题】已知 K sp Ө [Ag 3 PO 4 ]=8.7×10 -17 ,其在水中的溶解度 s= ( ) mol·L -1 。
A.
9.7×10 -5
B.
4.2×10 -5
C.
1.3×10 -5
D.
7.3×10 -5
【单选题】下列词语中画线字读音完全不同的一组是
A.
沁 香/分 泌 遒 劲 /干 劲 百 舸 / 可 汗  寥 廓 / 廓 清
B.
携 手 / 镌 刻 阻 遏 / 干 渴 惆 怅 / 稠 密 尽 管 / 尽 力
C.
河 畔 / 绊 倒  竹 篙 /芦 蒿 漫 溯 / 朔 气  揉 碎 /精 粹
D.
荡 漾 / 汤 汤 青 荇 / 惺 忪 笙 箫 / 萧 瑟 斑 斓 / 狂 澜
【单选题】下列词语中,画下划线的字读音完全不同的一组是()
A.
寒 暄 玄 机 选 拔 炫 耀
B.
雾 霭 拜 谒 遏 制 蔼 然
C.
珊 瑚 删 除  蹒 跚 珊 珊
D.
懊 丧 澳 门 奥 运 凹 凸
【判断题】已 知 K sp Ө ( Ag2CO 3 ) = 8.3 ́ 10 -12 , K sp Ө (Ag2CrO 4 ) = 1.1 ́ 10 -12 , 则 在 CO 3 2- 与 CrO 4 2- 的 混 合 溶 液 中 逐 滴 加 入 AgNO3 溶 液, CrO 4 2- 先 析 出 。
A.
正确
B.
错误
【单选题】下列词语中,画横线字的读音完全相同的一组是( )。
A.
删除 膻味 籼米 潸然泪下
B.
信笺 歼灭 缄默 间不容发
C.
飙升 鱼鳔 剽悍 彪炳青史
D.
血缘 戏谑 噱头 空穴来风
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