1 Compared with conventional beef, grass-fed beef is higher in this health-promoting nutrient, which gives its fat a yellow color:

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：

Vitamin A

维生素A

Vitamin B

维生素B

Vitamin C

维生素C

Vitamin D

维生素D

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?

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？

23 percent

23%

45 percent

45%

59 percent

59%

77 percent

77%

3 A large analysis found that birth order had an effect on which of the following traits?

3、一项大型分析发现，出生顺序对以下哪方面产生了影响？

Extroversion

外向程度

Consientiousness

责任心

IQ

智商

All of the above

以上所有

4 Exercise, particularly during midlife, may slow cell aging by preventing the fraying of this part of the chromosome:

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：

Centromeres

着丝粒

Telomeres

端粒

Chromatids

染色单体

Arms

染色体两臂

5 This contraceptive method is associated with the lowest one-year pregnancy rate:

5、采用哪种避孕方法，一年内的受孕率最低：

IUD

宫内节育器

The “pill”

口服药

Condoms

避孕套

Cervical caps and sponges

宫颈帽和海绵

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:

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：

Alcohol

酒精

Asbestos

石棉

Tobacco smoke

烟草烟雾

All of the above

以上所有

7 Obese children who cut their sugar intake showed lower blood pressure and improved cholesterol readings within:

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：

10 days

10天

One month

一个月

Two months

两个月

Six months

六个月

8 Sleep apnea has been tied to excess levels of uric acid and may raise the risk of this painful condition:

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：

Shingles

带状疱疹

Gout

痛风

Migraine

偏头痛

Sciatica

坐骨神经痛