在探究浮力的实验中，小凡同学将一块质量为78 g的铁块悬挂在弹_爱下问搜题

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问题填空题

在探究浮力的实验中，小凡同学将一块质量为78 g的铁块悬挂在弹簧测力计的挂钩上。

(1)当她手提弹簧测力计将该铁块缓慢放入水面的过程中，发现弹簧测力计的读数逐渐；当铁块完全浸入水中后，改变它在水中的深度，弹簧测力计的读数 ____ 。（填“变大”“不变”或“变小”）

(2)当铁块完全浸入水中后，弹簧测力计的读数应该是 ___N。(ρ_铁=7.8 xl0³kg/m³,g取10 N/kg)

答案

(1)变小；不变

(2)0. 68

多项选择题

颅内压增高的临床表现为（）

A.双侧瞳孔不等大

B.头痛

C.喷射性呕吐

D.视 * * 水肿

E.听力下降

完形填空

Like any good mother, when Karen found out that another      was on the way, she did what she could to help her three-year-old son, Michael,        for a new life. They found out that the new baby was going to be a girl, and every day Michael sang to his        in Mommy’s tummy.
The days went by. The little girl got        after the birth. The doctor told the parents, “There is very        hope. Be prepared for the worst.” They had fixed up a special         in their home for the new baby, but now they        a funeral.
Michael kept begging his parents to let him see his sister. “I want to        to her,” he said. If he didn’t see sister now, he might never see her     . She dressed him in an oversized suit and marched him into ICU, but the head nurse        him as a child and shouted. “Get the kid out of here now! No children are     .” The mother rose up strong, and the       mild-mannered lady glared steel-eyed into the head nurse’s face. “He is not leaving     he sings to his sister!” Karen towed Michael to his sister’s bedside. He gazed at the tiny infant         the battle to live, and he began to sing. In the pure        voice of a 3-year-old, Michael sang:
“You are my sunshine, my only sunshine. You make me happy when skies are gray....”
Instantly the baby girl        . The pulse rate became calm and steady.
“You never know, dear, how much I love you. Please don’t take my        away.”
“The other night, dear, as I lay sleeping, I        I held you in my arms.....”
Michael’s little sister relaxed.
The medical staff just called it a miracle. Karen called it a miracle of God’s       !
NEVER GIVE UP ON THE PEOPLE YOU LOVE. LOVE IS SO        POWERFUL.

B．UNBELIEVABLY