Q0416
Paragraf (Reading)Parça Bütünlüğü (Paragraph Unity)Zor

Our bones contain a surprising amount of water, typically around a third of their total mass despite appearing solid and rigid. The remainder consists mainly of mineral deposits like calcium and collagen fibres that provide structure. This water content contributes to bone flexibility, helping bones absorb impact without shattering, much like the shock-absorbing role water plays throughout the rest of the body.

AIn bone tissue, water acts as a lubricant that allows mineral crystals to shift slightly under stress rather than crack.Doğru cevap
BWater supports the structural integrity of bones, which are otherwise composed mainly of minerals.
CWe generally need sufficient calcium intake daily to maintain healthy bone density throughout life.
DWe need to consume enough water to ensure our bones remain properly hydrated at all times.
EWe have so much water in our bones, which prevents them from becoming permanently brittle over time.

Neden?

Boşluktan sonraki cümle 'This water content contributes to bone flexibility' der; yani boşluk, suyun kemik dokusunda ne yaptığını açıklamalıdır. Doğru seçenek suyun kayganlaştırıcı görev görüp mineral kristallerinin kırılmak yerine hafifçe kaymasını sağladığını söyler. Kalsiyum alımı ve su tüketimi seçenekleri bu mekanizmayı vermez.

PARALLEL BASE · Q619

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