1、与传统牛肉相比，草饲牛肉中某种有益健康的营养素含量更高，并让脂肪呈现黄色，这种营养素是：
1 Compared with conventional beef, grass-fed beef is higher in this health-promoting nutrient, which gives its fat a yellow color:
维生素A
Vitamin A
维生素B
Vitamin B
维生素C
Vitamin C
维生素D
Vitamin D
2、研究人员发现，如果你的婚姻属于“矛盾型”，你感觉配偶对自己的支持时高时低，那么你的健康可能会因此受损。在接受调查的夫妇中，“矛盾”婚姻的百分比有多高？
2 Researchers found that having an “ambivalent” marriage, in which feelings of support from a partner waver, could jeopardize health. What percentage of couples they surveyed had ambivalent marriages?
23%
23 percent
45%
45 percent
59%
59 percent
77%
77 percent
3、一项大型分析发现，出生顺序对以下哪方面产生了影响？
3 A large analysis found that birth order had an effect on which of the following traits?
外向程度
Extroversion
责任心
Consientiousness
智商
IQ
以上所有
All of the above
4、锻炼，特别是中年时期加强锻炼，可能会减缓细胞老化，防止染色体的哪个部分损耗：
4 Exercise, particularly during midlife, may slow cell aging by preventing the fraying of this part of the chromosome:
着丝粒
Centromeres
端粒
Telomeres
染色单体
Chromatids
染色体两臂
Arms
5、采用哪种避孕方法，一年内的受孕率最低：
5 This contraceptive method is associated with the lowest one-year pregnancy rate:
宫内节育器
IUD
口服药
The “pill”
避孕套
Condoms
宫颈帽和海绵
Cervical caps and sponges
6、世界卫生组织将热狗和培根等加工肉制品列为1类物质，即有“充分证据”显示它们可能会导致癌症。此类别中的其他致癌物质包括：
6 The World Health Organization placed processed meats like hot dogs and bacon in its Group 1 category, with “sufficient evidence” that they could cause cancer. Other carcinogens in this category include:
酒精
Alcohol
石棉
Asbestos
烟草烟雾
Tobacco smoke
以上所有
All of the above
7、肥胖儿童减少糖分摄入多久之后，血压会降低，胆固醇水平会得到改善：
7 Obese children who cut their sugar intake showed lower blood pressure and improved cholesterol readings within:
10天
10 days
一个月
One month
两个月
Two months
六个月
Six months
8、睡眠呼吸暂停和尿酸水平过高有关，而且还可能引发哪种疼痛的病症：
8 Sleep apnea has been tied to excess levels of uric acid and may raise the risk of this painful condition:
带状疱疹
Shingles
痛风
Gout
偏头痛
Migraine
坐骨神经痛
Sciatica