苯二氮卓类药物中毒的特异性治疗药物为A．氟马西尼 B．去甲肾上腺素 C．纳洛酮 D．

现有200mL 1mol/L H₂SO₄溶液，回答下列问题：

（1）写出H₂SO₄的电离方程式______

（2）该H₂SO₄溶液中H⁺的物质的量浓度是______

（3）请设计一个实验方案，证明此溶液中含有H⁺和SO₄^2-离子：

（4）用此H₂SO₄溶液和足量金属Zn反应，可以得到标准状况下气体多少升？

补全对话。

A: Hello, Charles.

B:  Hello, Claire. Nice to see you here. How are you?

A: Fine, thanks, Where are you going for your summer holidays, Clarles?

B: 1.                                  . I'm going to stay with my uncle for three weeks.

A: You certainly are lucky. How are you going there?

B: By air, of course. 2.                                 ?

A: I'm going to visit my grandparents in a small village. I go there every summer.  

B: Sounds great! I've never been to the countryside. What do you do there?

A: I do many things 3.                                 .

B: It's fantastic! Are you going there alone?

A: No. 4.                               By the way, what's John going to do this summer?

B: He says he's going to the mountains with his parents. Well, I've got to 90. Have fun, Claire.

A: 5.                                  I'll see you in September.

投资项目场(厂)址比选的主要内容包括建设条件、投资费用、运营费用、环境保护条件和( )。

A．安全条件

B．招标条件

C．施工条件

D．生活条件

专用条款说明中建议，违约金的最高赔偿限额为签约合同价的（）。

A.3‰

B.5‰

C.3%

D.5%