根据第三段横线后“Bones are mostly made of calcium and other minerals.Bone-building cells get these things from the food you eat.(骨头大部分是由钙和其他矿物质组成的。造骨细胞从你吃的食物中获得这些东西。)”,可知本段是讲述要吃含钙和矿物质的食物,A项:
Bones are made from hardened cartilage through a process called ossification. The human body contains 206 bones that make up the skeleton. These bones can be classified as either compact bones or cancellous bones. Compact bones are dense and make up 80% of the bones in our body while cancello...
768.However, in the not-too-distant future, we will be living in smart homes that will lock the door for us when we are away and remember to switch off the TV when we forget. 然而在不久的将来,我们将生活在智...
For someone with PTSD (and those without), it adds to the stress and when that person has spent more than half of their life enduring this suffocating existence trapped in survival mode continuously made promises however true at the time that cannot be and never are fulfilled it makes the en...
What substance are nails made out of?KeratinKeratin is a structural protein in the epidermis that makes up hair, nails, skin, hooves, feathers, and horns. Keratin also protects epithelial (skin) cells from damage. Keratin has two structures, softer forms found in all vertebrates, and harder ...
Sonnets are often thought of as not just little songs, but little essays, with the first six-to-eight or so lines building up a problem, the next four-to-six discussing it, and the last two-to-four coming to a conclusion. The “rules” are somewhat bendable, but I tried stay relativ...
the particles that this limestone was made of were so fine that the limestone preserved much of the fossil in exquisite detail, and, as I said, revealed impressions of details even as small as the lines in a feather. But that’s pretty rare. There are not many fossils of ancient birds ...
Answer explanation:A few lines in said paragraph discuss that“the most important skeletal differences betweendinosaurs and other archosaurs are in the bones of the skull, pelvis, and limbs.”This passage focuses on how to identify dinosaurs and archosaurs based on their skull-bones differences. ...
Perfectionism can stall momentum and lock in ideas prematurely. Early mockups should focus on structure, not style. That means resisting the urge to obsess over spacing, colors, or pixel-perfect placement. If the bones aren’t strong, no amount of polish will save them. ...
According to theologian Margaret Renner, the peacock's eye-studded feather is an important cultural talisman to ward off evil spirits. It is also highly regarded for its powerful medicinal uses. The Sinhalese in Sri Lanka believe the feather can fix injured bones and repel poisonous bites. Early...