源于天南星科，能祛风湿、强筋骨的是（） A.五加皮 B.刺五加 C.千年健 D.桑寄

水与我们的生存和发展息息相关，下列关于水的认识正确的是（　　）

A．洁净的天然水一定是纯净物

B．水的电解实验说明水中含有氢分子和氧分子

C．用含磷洗衣粉会影响水质

D．用尝味道的方法可以区别硬水和软水

We have lodged a claim ____________ ABC & Co. ____________ the quality of the goods shipped by M.V. “Peace”.

第1篇 Road Trip Vacations

It’s summer. In the United States, it’s the season of swimming pools, barbeques, camping and road trips.
Road trip vacations where the car journey is part of the fun are especially popular with college students, who like to explore the country on wheels. These budget trips are ideal for students who often have plenty of free time but little money.
"Ever since I went to college, I’ve been traveling around a lot, exploring the country," said Austin Hawkins, a 19-year-old college student from New York. This summer, Hawkins and his friends have spent weekends traveling in New England.
The best part about car trips, said Hawkins, is that you can be spontaneous. "On a road trip, if you get interested in things you see along the way you can stop and explore. "
Matt Roberts, a 20-year-old student from Ohio who drove to Montreal, Canada, agrees. "With road trips you don’t have to plan in advance, you can just get into a car and drive. "
Even with high gas prices, driving with friends is cheaper than flying. Roberts paid about 40 dollars for gas, but a round trip plane ticket would have cost nearly 400 dollars.
Driving trips first became popular in the 1920s. Newly paved roads and improved cars made it possible to travel longer distances. Motels started appearing outside cities.
By the 1950s, car ownership became the norm. Construction of the US interstate highway system began in 1956 and motel and restaurant chains popped up everywhere making long distance trips easier.
Today, the US has the highest car ownership rate in the world. Only 8 percent of American homes have no car, according to the most recent US census.
Though many college students don’t own a car, most have access to one. On many of Hawkins’ trips, they used a borrowed van.
Hawkins’ most memorable road trip took place over spring break. He and two friends drove from New York to New Orleans to volunteer, helping rebuild the city after Hurricane Katrina hit it last July. They crossed the country in two days and slept in their car in church parking lots.
Roberts’ road trip to Canada last winter was even more eventful. Upon arriving in Montreal, they were lost in a blizzard and shivering in the -25~cold. To find their hotel, they turned on a laptop and drove around in circles until they found a spot with wireless Internet coverage.
"I know we should have planned better, but we’re young. Now, when I see those guys I always say: ’Remember when we were lost in the snow storm! ’ I’ll never forget that. \

The word "blizzard" in paragraph 12 means ______.

A．snow storm

B．hurricane

C．mist

D．fog

变态心理学注重心理异常的（）

A．诊断

B．发作

C．成因

D．治疗

______是指以调整配合比或掺用外加剂的方法增加混凝土自身抗渗性的一种混凝土。