Problem: Please answer a question about the following article about Sichuan:
On 3 November 2007, the Sichuan Transportation Bureau announced that the Sui-Yu Expressway was completed after three years of construction. After completion of the Chongqing section of the road, the 36.64 km (22.77 mi) expressway connected Cheng-Nan Expressway and formed the shortest expressway from Chengdu to Chongqing. The new expressway is 50 km (31 mi) shorter than the pre-existing road between Chengdu and Chongqing; thus journey time between the two cities was reduced by an hour, now taking two and a half hours. The Sui-Yu Expressway is a four lane overpass with a speed limit of 80 km/h (50 mph). The total investment was 1.045 billion yuan.
What was the total cost of the Sui-Yu Expressway?
A: 1.045 billion yuan
Problem: Please answer a question about the following article about Israel:
Israel has one of the highest ratios of defense spending to GDP of all developed countries, only topped by Oman and Saudi Arabia. In 1984, for example, the country spent 24% of its GDP on defense. By 2006, that figure had dropped to 7.3%. Israel is one of the world's largest arms exporters, and was ranked fourth in the world for weapons exports in 2007. The majority of Israel's arms exports are unreported for security reasons. Since 1967, the United States has been a particularly notable foreign contributor of military aid to Israel: the US is expected to provide the country with $3.15 billion per year from 2013 to 2018. Israel is consistently rated low in the Global Peace Index, ranking 148th out of 162 nations for peacefulness in 2015.
What two countries have a higher defense spending to GDP ratio than Israel?
A: Oman and Saudi Arabia
Problem: Please answer a question about the following article about Incandescent light bulb:
This means that a 5% reduction in operating voltage will more than double the life of the bulb, at the expense of reducing its light output by about 16%. This may be a very acceptable trade off for a light bulb that is in a difficult-to-access location (for example, traffic lights or fixtures hung from high ceilings). Long-life bulbs take advantage of this trade-off. Since the value of the electric power they consume is much more than the value of the lamp, general service lamps emphasize efficiency over long operating life. The objective is to minimize the cost of light, not the cost of lamps. Early bulbs had a life of up to 2500 hours, but in 1924 a cartel agreed to limit life to 1000 hours. When this was exposed in 1953, General Electric and other leading American manufacturers were banned from limiting the life.
When did light bulb manufacturers establish a cartel to limit bulb life?
A: 1924
Problem: Please answer a question about the following article about Copper:
Copper is an essential trace element in plants and animals, but not some microorganisms. The human body contains copper at a level of about 1.4 to 2.1 mg per kg of body mass. Stated differently, the RDA for copper in normal healthy adults is quoted as 0.97 mg/day and as 3.0 mg/day. Copper is absorbed in the gut, then transported to the liver bound to albumin. After processing in the liver, copper is distributed to other tissues in a second phase. Copper transport here involves the protein ceruloplasmin, which carries the majority of copper in blood. Ceruloplasmin also carries copper that is excreted in milk, and is particularly well-absorbed as a copper source. Copper in the body normally undergoes enterohepatic circulation (about 5 mg a day, vs. about 1 mg per day absorbed in the diet and excreted from the body), and the body is able to excrete some excess copper, if needed, via bile, which carries some copper out of the liver that is not then reabsorbed by the intestine.
How is copper absorbed in humans?
A:
in the gut