一、选择题:在每小题所列出的四个选项中,只有一项是最符合题目要求的。入世对中国的挑战,农业首当其冲,而其中具有“战略地位”的粮食,受到的冲击则更不可小觑。2 0世纪90年代以前,中国粮食的国内价格水平低于国际市场,粮食产品在价格上具有贸易竞争优势。但近10年来,中国粮食 First, the multiple-choice questions: Among the four options listed in each question, only one is the most consistent with the requirements of the title. The challenge of China’s accession to China is that agriculture will bear the brunt of the challenges, and the food that has “strategic status” will be even more undermined. Before the 1990s, the domestic price level of China’s grain was lower than that of the international market, and grain products had a trade advantage in terms of price. But in the past 10 years, China’s grain