题目

法国里昂的科学家发现一种只由四个中子构成的粒子，这种粒子称为“四中子”，也有人称之为“零号元素”。它与天体中的中子星构成类似。有关该粒子的说法正确的是（） A . 带四个单位的正电荷 B . 相当于一个氦（He）原子的质量 C . 失去一个中子后显+1价 D . 在周期表中与氢元素占同一位置 答案：B                                      D Wilma was born on June 23, 1940 in St Bethlehem, Tennesse. By the time she was 6, Wilma Rudolph was given metal braces (支架) to aid her in walking. She started receiving treatment with help from her family. A few years later, she walked without any assistance into the church. When she was in junior high, she joined the basketball team. She finally made an appeal to compete in games again and when her wish was finally permitted, she amazed everyone by leading the team to an undefeated season and the state championships. Though they lost the championship title in the end, Wilma Rudolph earned the attention of the women’s track coach，Ed Template at Tennessee State University and was invited to join the "Tigerbelles"．Her efforts paid off as she turned out to be so good that the Tigerbelles invited her to join them in the national Olympic team trails. Not only did she make it into the team, but she won a bronze medal in the 4×100 m relay at the 1956 Melbourne Olympics. Four years later, Rudolph set a world 200 m record (22.9 seconds) at the 1960 US Championships. At the Rome Olympics in 1960, she competed in the 100 m, 200 m and 4×100 m relay, and equaled the world record of 11.3 seconds in the semifinals (半决赛) of the 100 m. She won the final by three metres in 11.0 seconds, but it was not accepted as a world record. Wilma Rudolph’s extraordinary achievements in Rome made her a darling of the European press who gave her the nickname "The Black Gazelle (羚羊)" and "The Black Pearl". She also became the first woman in American history to win 3 gold medals in the Olympics and was crowned "the Fastest Woman in the World", Wilma Rudolph’s spirit inspired people such as Jackie Joyner Kersee and Florence Griffith Joyner who became the next woman to win 3 gold medals.【小题1】What problem did Wilma face according to Paragraph 1?A．Not being able to speak.B．Not being able to walk.C．Losing her sight.D．Losing her hearing.【小题2】We learn that Wilma broke the world record in________.A．the 4×100m relay at the 1956 Melbourne OlympicsB．the semifinals of the 100m at the Rome OlympicsC．the 200m at the 1960 US ChampionshipsD．the final of the 100m at the Rome Olympics【小题3】 How many people that at least won 3 Olympics gold medals in American history are mentioned in the passage?A．One.B．Three.C．Four.D．Five.