<view class='tab'>
  <view class='tab-menu'>
    <view class='menu' wx:for="{{tabs}}" wx:key="{{index}}" data-tabidx="{{index}}" bindtap='switchTab'>
      <text>{{item}}</text>
      <view class='currentTab' wx:if="{{tabIdx === index}}"></view>
    </view>
  </view>
  <swiper class='tab-content' current='{{tabIdx}}' bindchange='scrollTab'>
    <swiper-item>
      <view class='question-wrap'>
        <view class='question-header'>
          <text>[{{questions[current].type}}]</text>
          <text class='total'><text class='current'>{{current+1}}</text>/{{questions.length}}</text>
        </view>
        <view class='title'>{{questions[current].title}}</view>
        <view class='options'>
          <view class='opt {{questions[current].right === index ? "right" : ""}}' wx:for="{{questions[current].options}}" wx:key="{{index}}">
            <view class='tag'>
              <image src='/icons/right.png' wx:if="{{questions[current].right === index}}"></image>              
            </view>
            <view class='content'>{{item.content}}</view>
            <text class='rate'>{{item.rate}}</text>
          </view>
        </view>
      </view>
      <view class='btns'>
        <button disabled='{{current <= 0}}' bindtap="showPre"></button>
        <button disabled='{{current >= questions.length-1}}' bindtap="showNext"></button>
      </view>
    </swiper-item>

    <swiper-item>
      <scroll-view scroll-y class='totalRank' lower-threshold="150" bindscrolltolower="getRank">
        <view class='user' wx:for="{{ranks}}" wx:key="{{index}}">
          <image src='{{item.img_url}}' class='avator'></image>
          <view class='name'>{{item.name}}</view>
          <view class='score'>{{item.score}}</view>
          <view class='order'>{{item.no}}</view>
        </view>
      </scroll-view>
    </swiper-item>
  </swiper>
</view>

page {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: -sharpfff;
  font-size: 30rpx;
}

.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tab-content {
  flex: 1;
  overflow-y: auto;
}

.tab-menu {
  height: 104rpx;
  display: flex;
}

.currentTab {
  background: -sharp42c541;
  height: 2rpx;
  width: 132rpx;
  position: absolute;
  bottom: 20rpx;
}

.tab-menu .menu {
  flex: 1;
  text-align: center;
  font-size: 28rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

swiper-item {
  overflow: auto;
}

.totalRank {
  height: 100%;
}

.avator {
  width: 60rpx;
  height: 60rpx;
  border-radius: 50%;
}

.user {
  height: 88rpx;
  display: flex;
  align-items: center;
  background: -sharpf4f4f4;
  padding: 0 43rpx;
  margin: 30rpx 30rpx 0 30rpx;
  border-radius: 10rpx;
  box-sizing: border-box;
  font-size: 24rpx;
}

.name, .score, .order {
  flex: 1;
  text-align: center;
}
.name{
  margin-left: 50rpx;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.order {
  color: -sharp42c541;
  text-align: right;
}

.question-wrap{
  display: flex;
  flex-direction: column;
  margin: 0 30rpx;
  border: 2rpx solid -sharpDCDCDC;
  border-radius: 10rpx;
  box-sizing: border-box;
  padding: 0 50rpx;
  margin-top: 40rpx;
}
.question-header{
  display: flex;
  justify-content: space-between;
  margin-top: 60rpx;
}
/* .question-wrap .options{
  max-height: 600rpx;
  overflow: auto;
} */
.question-header .total{
  color: -sharpE3E3E3;
}
.question-header .current{
  color: -sharp353535;
}
.question-wrap .title{
  margin-top: 36rpx;
  min-height: 178rpx;
}
.opt{
  text-align: center;
  position: relative;
  background: -sharpF0F0F0;
  margin-bottom: 44rpx;
  border-radius: 10rpx;
  padding: 26rpx 20rpx;
  display: flex;
  align-items: center;
}
.opt image, .opt .tag{
  width: 46rpx;
  height: 34rpx;
}
.opt .rate{
  min-width: 3em;
}
.opt .content{
  flex: 1;
  text-align: center;
}
.right{
  background: -sharpFF920B;
  color: -sharpFFF;
}
.btns{
  display: flex;
  margin-top: 60rpx;
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 148rpx;
}
.btns button{
  width: 260rpx;
  height: 88rpx;
  line-height: 88rpx;
  text-align: center;
  border-radius: 10rpx;
  color: -sharpFFF;
  background: -sharp41C629;
}

.btns button:active{
  background: -sharp179B16;
  color: -sharpA2D7A2;
}
.btns button[disabled]:active{
  background: -sharpF7F7F7;
  color: -sharpACACAC;
}

Page({
  data: {
    tabs: [
      '',
      ''
    ],
    ranks: [
      { name: '', score: 93 },
      { name: '', score: 60 },
      { name: '', score: 8 },
      { name: '', score: 1000 },
      { name: '', score: 45 }
    ],
    questions: [],
    current: 0,
    tabIdx: 0
  }
})

https://developers.weixin.qq., can solve the problems you encounter, very simple